PackagesCanonicalsLogsProblems
    Packages
    hl7.fhir.uv.xver-r4.r3@0.1.0
    http://hl7.org/fhir/4.0/StructureDefinition/extension-SubstancePolymer.repeat
{
  "description": "R4: `SubstancePolymer.repeat` (new:BackboneElement)",
  "_filename": "StructureDefinition-ext-R4-SubstancePolymer.repeat.json",
  "package_name": "hl7.fhir.uv.xver-r4.r3",
  "date": "2026-03-17T21:02:03.8104715+00:00",
  "derivation": "constraint",
  "publisher": "FHIR Infrastructure",
  "fhirVersion": "3.0.2",
  "jurisdiction": [ {
    "coding": [ {
      "code": "001",
      "system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
      "display": "World"
    } ]
  } ],
  "purpose": "This extension is part of the cross-version definitions generated to enable use of the\r\nelement `SubstancePolymer.repeat` as defined in FHIR R4\r\nin FHIR STU3.\r\n\r\nThe source element is defined as:\r\n`SubstancePolymer.repeat` 0..* `BackboneElement`\r\n\r\nFollowing are the generation technical comments:\r\nElement `SubstancePolymer.repeat` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
  "name": "ExtensionSubstancePolymer_Repeat",
  "mapping": [ {
    "uri": "http://hl7.org/v3",
    "name": "RIM Mapping",
    "identity": "rim"
  } ],
  "abstract": false,
  "type": "Extension",
  "experimental": "false",
  "resourceType": "StructureDefinition",
  "title": "R4: Todo (new)",
  "package_version": "0.1.0",
  "extension": [ {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode": "fhir"
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/package-source",
    "extension": [ {
      "url": "packageId",
      "valueId": "hl7.fhir.uv.xver-r4.r3"
    }, {
      "url": "version",
      "valueString": "0.1.0"
    }, {
      "url": "uri",
      "valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4.r3"
    } ]
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger": 0,
    "_valueInteger": {
      "extension": [ {
        "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
        "valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4.r3"
      } ]
    }
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode": "trial-use",
    "_valueCode": {
      "extension": [ {
        "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
        "valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4.r3"
      } ]
    }
  } ],
  "snapshot": {
    "element": [ {
      "constraint": [ {
        "key": "ele-1",
        "human": "All FHIR elements must have a @value or children",
        "xpath": "@value|f:*|h:div",
        "source": "http://hl7.org/fhir/StructureDefinition/Element",
        "severity": "error",
        "expression": "hasValue() | (children().count() > id.count())"
      }, {
        "key": "ext-1",
        "human": "Must have either extensions or value[x], not both",
        "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
        "source": "http://hl7.org/fhir/StructureDefinition/Extension",
        "severity": "error",
        "expression": "extension.exists() != value.exists()"
      } ],
      "path": "Extension",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat` (new:BackboneElement)",
      "isModifier": false,
      "short": "R4: Todo (new)",
      "max": "*",
      "id": "Extension",
      "condition": [ "ele-1" ],
      "comment": "Element `SubstancePolymer.repeat` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension"
      }
    }, {
      "path": "Extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension",
      "min": 0,
      "definition": "An Extension",
      "short": "Extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "max": "*",
      "id": "Extension.extension",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.numberOfUnits` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.numberOfUnits` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.numberOfUnits` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.numberOfUnits` (new:integer)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "numberOfUnits",
      "max": "1",
      "id": "Extension.extension:numberOfUnits",
      "comment": "Element `SubstancePolymer.repeat.numberOfUnits` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.numberOfUnits` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.numberOfUnits` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:numberOfUnits.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:numberOfUnits.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "numberOfUnits",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:numberOfUnits.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.value[x]",
      "min": 0,
      "definition": "Todo.",
      "short": "Todo",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "integer"
      } ],
      "max": "1",
      "id": "Extension.extension:numberOfUnits.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.averageMolecularFormula` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.averageMolecularFormula` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.averageMolecularFormula` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.averageMolecularFormula` (new:string)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "averageMolecularFormula",
      "max": "1",
      "id": "Extension.extension:averageMolecularFormula",
      "comment": "Element `SubstancePolymer.repeat.averageMolecularFormula` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.averageMolecularFormula` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.averageMolecularFormula` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:averageMolecularFormula.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:averageMolecularFormula.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "averageMolecularFormula",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:averageMolecularFormula.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.value[x]",
      "min": 0,
      "definition": "Todo.",
      "short": "Todo",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "max": "1",
      "id": "Extension.extension:averageMolecularFormula.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnitAmountType` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnitAmountType` (new:CodeableConcept)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "repeatUnitAmountType",
      "max": "1",
      "id": "Extension.extension:repeatUnitAmountType",
      "comment": "Element `SubstancePolymer.repeat.repeatUnitAmountType` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnitAmountType.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnitAmountType.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "repeatUnitAmountType",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnitAmountType.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.value[x]",
      "min": 0,
      "definition": "Todo.",
      "short": "Todo",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnitAmountType.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit` (new:BackboneElement)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "repeatUnit",
      "max": "*",
      "id": "Extension.extension:repeatUnit",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension",
      "min": 0,
      "definition": "An Extension",
      "short": "Extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` (new:CodeableConcept)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "orientationOfPolymerisation",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:orientationOfPolymerisation",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:orientationOfPolymerisation.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:orientationOfPolymerisation.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "orientationOfPolymerisation",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:orientationOfPolymerisation.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Todo.",
      "short": "Todo",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:orientationOfPolymerisation.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.repeatUnit` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.repeatUnit` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.repeatUnit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.repeatUnit` (new:string)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "repeatUnit",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:repeatUnit",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.repeatUnit` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.repeatUnit` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.repeatUnit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:repeatUnit.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:repeatUnit.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "repeatUnit",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:repeatUnit.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Todo.",
      "short": "Todo",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:repeatUnit.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.amount` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.amount` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.amount` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.amount` (new:SubstanceAmount)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "amount",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.amount` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.amount` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.amount` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "min": 0,
      "definition": "An Extension",
      "short": "Extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:amount.extension",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "min": 1,
      "definition": "Slice to indicate the presence of a R4 `SubstanceAmount` in FHIR STU3",
      "short": "DataType slice for a FHIR R4 `SubstanceAmount` value",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "_datatype",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:_datatype",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:_datatype.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:_datatype.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "http://hl7.org/fhir/StructureDefinition/_datatype",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:_datatype.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.value[x]",
      "min": 1,
      "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
      "short": "Value of extension",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "max": "1",
      "fixedString": "SubstanceAmount",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:_datatype.value[x]",
      "comment": "Must be: SubstanceAmount",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.amount[x]` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amount[x]` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.amount[x]` (new:Quantity, Range, string)",
      "short": "R4: Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "amount",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amount",
      "comment": "Element `SubstanceAmount.amount[x]` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amount[x]` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amount.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amount.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "amount",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amount.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field.",
      "short": "Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "Quantity"
      }, {
        "code": "Range"
      }, {
        "code": "string"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amount.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.amountType` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountType` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.amountType` (new:CodeableConcept)",
      "short": "R4: Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "amountType",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountType",
      "comment": "Element `SubstanceAmount.amountType` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountType` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountType.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountType.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "amountType",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountType.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements.",
      "short": "Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountType.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.amountText` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountText` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.amountText` (new:string)",
      "short": "R4: A textual comment on a numeric value (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "amountText",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountText",
      "comment": "Element `SubstanceAmount.amountText` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountText` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountText.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountText.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "amountText",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountText.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "A textual comment on a numeric value.",
      "short": "A textual comment on a numeric value",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountText.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.referenceRange` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.referenceRange` (new:Element)",
      "short": "R4: Reference range of possible or expected values (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "referenceRange",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange",
      "comment": "Element `SubstanceAmount.referenceRange` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "An Extension",
      "short": "Extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.referenceRange.lowLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.lowLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.lowLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.referenceRange.lowLimit` (new:Quantity)",
      "short": "R4: Lower limit possible or expected (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "lowLimit",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:lowLimit",
      "comment": "Element `SubstanceAmount.referenceRange.lowLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.lowLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.lowLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:lowLimit.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:lowLimit.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "lowLimit",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:lowLimit.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Lower limit possible or expected.",
      "short": "Lower limit possible or expected",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "Quantity"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:lowLimit.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.referenceRange.highLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.highLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.highLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.referenceRange.highLimit` (new:Quantity)",
      "short": "R4: Upper limit possible or expected (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "highLimit",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:highLimit",
      "comment": "Element `SubstanceAmount.referenceRange.highLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.highLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.highLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:highLimit.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:highLimit.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "highLimit",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:highLimit.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Upper limit possible or expected.",
      "short": "Upper limit possible or expected",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "Quantity"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:highLimit.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "referenceRange",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
      "short": "Value of extension",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "base64Binary"
      }, {
        "code": "boolean"
      }, {
        "code": "code"
      }, {
        "code": "date"
      }, {
        "code": "dateTime"
      }, {
        "code": "decimal"
      }, {
        "code": "id"
      }, {
        "code": "instant"
      }, {
        "code": "integer"
      }, {
        "code": "markdown"
      }, {
        "code": "oid"
      }, {
        "code": "positiveInt"
      }, {
        "code": "string"
      }, {
        "code": "time"
      }, {
        "code": "unsignedInt"
      }, {
        "code": "uri"
      }, {
        "code": "Address"
      }, {
        "code": "Age"
      }, {
        "code": "Annotation"
      }, {
        "code": "Attachment"
      }, {
        "code": "CodeableConcept"
      }, {
        "code": "Coding"
      }, {
        "code": "ContactPoint"
      }, {
        "code": "Count"
      }, {
        "code": "Distance"
      }, {
        "code": "Duration"
      }, {
        "code": "HumanName"
      }, {
        "code": "Identifier"
      }, {
        "code": "Money"
      }, {
        "code": "Period"
      }, {
        "code": "Quantity"
      }, {
        "code": "Range"
      }, {
        "code": "Ratio"
      }, {
        "code": "Reference"
      }, {
        "code": "SampledData"
      }, {
        "code": "Signature"
      }, {
        "code": "Timing"
      }, {
        "code": "Meta"
      } ],
      "max": "0",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "amount",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
      "short": "Value of extension",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "base64Binary"
      }, {
        "code": "boolean"
      }, {
        "code": "code"
      }, {
        "code": "date"
      }, {
        "code": "dateTime"
      }, {
        "code": "decimal"
      }, {
        "code": "id"
      }, {
        "code": "instant"
      }, {
        "code": "integer"
      }, {
        "code": "markdown"
      }, {
        "code": "oid"
      }, {
        "code": "positiveInt"
      }, {
        "code": "string"
      }, {
        "code": "time"
      }, {
        "code": "unsignedInt"
      }, {
        "code": "uri"
      }, {
        "code": "Address"
      }, {
        "code": "Age"
      }, {
        "code": "Annotation"
      }, {
        "code": "Attachment"
      }, {
        "code": "CodeableConcept"
      }, {
        "code": "Coding"
      }, {
        "code": "ContactPoint"
      }, {
        "code": "Count"
      }, {
        "code": "Distance"
      }, {
        "code": "Duration"
      }, {
        "code": "HumanName"
      }, {
        "code": "Identifier"
      }, {
        "code": "Money"
      }, {
        "code": "Period"
      }, {
        "code": "Quantity"
      }, {
        "code": "Range"
      }, {
        "code": "Ratio"
      }, {
        "code": "Reference"
      }, {
        "code": "SampledData"
      }, {
        "code": "Signature"
      }, {
        "code": "Timing"
      }, {
        "code": "Meta"
      } ],
      "max": "0",
      "id": "Extension.extension:repeatUnit.extension:amount.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` (new:BackboneElement)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "degreeOfPolymerisation",
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "min": 0,
      "definition": "An Extension",
      "short": "Extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` (new:CodeableConcept)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "degree",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:degree",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:degree.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:degree.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "degree",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:degree.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Todo.",
      "short": "Todo",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:degree.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` (new:SubstanceAmount)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "amount",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "An Extension",
      "short": "Extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "min": 1,
      "definition": "Slice to indicate the presence of a R4 `SubstanceAmount` in FHIR STU3",
      "short": "DataType slice for a FHIR R4 `SubstanceAmount` value",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "_datatype",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:_datatype",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:_datatype.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:_datatype.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "http://hl7.org/fhir/StructureDefinition/_datatype",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:_datatype.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.value[x]",
      "min": 1,
      "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
      "short": "Value of extension",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "max": "1",
      "fixedString": "SubstanceAmount",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:_datatype.value[x]",
      "comment": "Must be: SubstanceAmount",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.amount[x]` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amount[x]` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.amount[x]` (new:Quantity, Range, string)",
      "short": "R4: Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "amount",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amount",
      "comment": "Element `SubstanceAmount.amount[x]` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amount[x]` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amount.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amount.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "amount",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amount.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field.",
      "short": "Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "Quantity"
      }, {
        "code": "Range"
      }, {
        "code": "string"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amount.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.amountType` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountType` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.amountType` (new:CodeableConcept)",
      "short": "R4: Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "amountType",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountType",
      "comment": "Element `SubstanceAmount.amountType` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountType` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountType.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountType.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "amountType",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountType.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements.",
      "short": "Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountType.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.amountText` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountText` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.amountText` (new:string)",
      "short": "R4: A textual comment on a numeric value (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "amountText",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountText",
      "comment": "Element `SubstanceAmount.amountText` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountText` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountText.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountText.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "amountText",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountText.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "A textual comment on a numeric value.",
      "short": "A textual comment on a numeric value",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountText.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.referenceRange` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.referenceRange` (new:Element)",
      "short": "R4: Reference range of possible or expected values (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "referenceRange",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange",
      "comment": "Element `SubstanceAmount.referenceRange` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "An Extension",
      "short": "Extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.referenceRange.lowLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.lowLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.lowLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.referenceRange.lowLimit` (new:Quantity)",
      "short": "R4: Lower limit possible or expected (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "lowLimit",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:lowLimit",
      "comment": "Element `SubstanceAmount.referenceRange.lowLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.lowLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.lowLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:lowLimit.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:lowLimit.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "lowLimit",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:lowLimit.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Lower limit possible or expected.",
      "short": "Lower limit possible or expected",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "Quantity"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:lowLimit.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.referenceRange.highLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.highLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.highLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.referenceRange.highLimit` (new:Quantity)",
      "short": "R4: Upper limit possible or expected (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "highLimit",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:highLimit",
      "comment": "Element `SubstanceAmount.referenceRange.highLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.highLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.highLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:highLimit.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:highLimit.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "highLimit",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:highLimit.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Upper limit possible or expected.",
      "short": "Upper limit possible or expected",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "Quantity"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:highLimit.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "referenceRange",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
      "short": "Value of extension",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "base64Binary"
      }, {
        "code": "boolean"
      }, {
        "code": "code"
      }, {
        "code": "date"
      }, {
        "code": "dateTime"
      }, {
        "code": "decimal"
      }, {
        "code": "id"
      }, {
        "code": "instant"
      }, {
        "code": "integer"
      }, {
        "code": "markdown"
      }, {
        "code": "oid"
      }, {
        "code": "positiveInt"
      }, {
        "code": "string"
      }, {
        "code": "time"
      }, {
        "code": "unsignedInt"
      }, {
        "code": "uri"
      }, {
        "code": "Address"
      }, {
        "code": "Age"
      }, {
        "code": "Annotation"
      }, {
        "code": "Attachment"
      }, {
        "code": "CodeableConcept"
      }, {
        "code": "Coding"
      }, {
        "code": "ContactPoint"
      }, {
        "code": "Count"
      }, {
        "code": "Distance"
      }, {
        "code": "Duration"
      }, {
        "code": "HumanName"
      }, {
        "code": "Identifier"
      }, {
        "code": "Money"
      }, {
        "code": "Period"
      }, {
        "code": "Quantity"
      }, {
        "code": "Range"
      }, {
        "code": "Ratio"
      }, {
        "code": "Reference"
      }, {
        "code": "SampledData"
      }, {
        "code": "Signature"
      }, {
        "code": "Timing"
      }, {
        "code": "Meta"
      } ],
      "max": "0",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "amount",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
      "short": "Value of extension",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "base64Binary"
      }, {
        "code": "boolean"
      }, {
        "code": "code"
      }, {
        "code": "date"
      }, {
        "code": "dateTime"
      }, {
        "code": "decimal"
      }, {
        "code": "id"
      }, {
        "code": "instant"
      }, {
        "code": "integer"
      }, {
        "code": "markdown"
      }, {
        "code": "oid"
      }, {
        "code": "positiveInt"
      }, {
        "code": "string"
      }, {
        "code": "time"
      }, {
        "code": "unsignedInt"
      }, {
        "code": "uri"
      }, {
        "code": "Address"
      }, {
        "code": "Age"
      }, {
        "code": "Annotation"
      }, {
        "code": "Attachment"
      }, {
        "code": "CodeableConcept"
      }, {
        "code": "Coding"
      }, {
        "code": "ContactPoint"
      }, {
        "code": "Count"
      }, {
        "code": "Distance"
      }, {
        "code": "Duration"
      }, {
        "code": "HumanName"
      }, {
        "code": "Identifier"
      }, {
        "code": "Money"
      }, {
        "code": "Period"
      }, {
        "code": "Quantity"
      }, {
        "code": "Range"
      }, {
        "code": "Ratio"
      }, {
        "code": "Reference"
      }, {
        "code": "SampledData"
      }, {
        "code": "Signature"
      }, {
        "code": "Timing"
      }, {
        "code": "Meta"
      } ],
      "max": "0",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "degreeOfPolymerisation",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
      "short": "Value of extension",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "base64Binary"
      }, {
        "code": "boolean"
      }, {
        "code": "code"
      }, {
        "code": "date"
      }, {
        "code": "dateTime"
      }, {
        "code": "decimal"
      }, {
        "code": "id"
      }, {
        "code": "instant"
      }, {
        "code": "integer"
      }, {
        "code": "markdown"
      }, {
        "code": "oid"
      }, {
        "code": "positiveInt"
      }, {
        "code": "string"
      }, {
        "code": "time"
      }, {
        "code": "unsignedInt"
      }, {
        "code": "uri"
      }, {
        "code": "Address"
      }, {
        "code": "Age"
      }, {
        "code": "Annotation"
      }, {
        "code": "Attachment"
      }, {
        "code": "CodeableConcept"
      }, {
        "code": "Coding"
      }, {
        "code": "ContactPoint"
      }, {
        "code": "Count"
      }, {
        "code": "Distance"
      }, {
        "code": "Duration"
      }, {
        "code": "HumanName"
      }, {
        "code": "Identifier"
      }, {
        "code": "Money"
      }, {
        "code": "Period"
      }, {
        "code": "Quantity"
      }, {
        "code": "Range"
      }, {
        "code": "Ratio"
      }, {
        "code": "Reference"
      }, {
        "code": "SampledData"
      }, {
        "code": "Signature"
      }, {
        "code": "Timing"
      }, {
        "code": "Meta"
      } ],
      "max": "0",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` (new:BackboneElement)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "structuralRepresentation",
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "min": 0,
      "definition": "An Extension",
      "short": "Extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` (new:CodeableConcept)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "type",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "type",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Todo.",
      "short": "Todo",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` (new:string)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "representation",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "representation",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Todo.",
      "short": "Todo",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` (new:Attachment)",
      "short": "R4: Todo (new)",
      "type": [ {
        "code": "Extension"
      } ],
      "sliceName": "attachment",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "min": 0,
      "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
      "short": "Additional Content defined by implementations",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "alias": [ "extensions", "user content" ],
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment.extension",
      "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "attachment",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Todo.",
      "short": "Todo",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "Attachment"
      } ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "structuralRepresentation",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.extension.value[x]",
      "min": 0,
      "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
      "short": "Value of extension",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "base64Binary"
      }, {
        "code": "boolean"
      }, {
        "code": "code"
      }, {
        "code": "date"
      }, {
        "code": "dateTime"
      }, {
        "code": "decimal"
      }, {
        "code": "id"
      }, {
        "code": "instant"
      }, {
        "code": "integer"
      }, {
        "code": "markdown"
      }, {
        "code": "oid"
      }, {
        "code": "positiveInt"
      }, {
        "code": "string"
      }, {
        "code": "time"
      }, {
        "code": "unsignedInt"
      }, {
        "code": "uri"
      }, {
        "code": "Address"
      }, {
        "code": "Age"
      }, {
        "code": "Annotation"
      }, {
        "code": "Attachment"
      }, {
        "code": "CodeableConcept"
      }, {
        "code": "Coding"
      }, {
        "code": "ContactPoint"
      }, {
        "code": "Count"
      }, {
        "code": "Distance"
      }, {
        "code": "Duration"
      }, {
        "code": "HumanName"
      }, {
        "code": "Identifier"
      }, {
        "code": "Money"
      }, {
        "code": "Period"
      }, {
        "code": "Quantity"
      }, {
        "code": "Range"
      }, {
        "code": "Ratio"
      }, {
        "code": "Reference"
      }, {
        "code": "SampledData"
      }, {
        "code": "Signature"
      }, {
        "code": "Timing"
      }, {
        "code": "Meta"
      } ],
      "max": "0",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "repeatUnit",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.extension:repeatUnit.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.extension.value[x]",
      "min": 0,
      "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
      "short": "Value of extension",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "base64Binary"
      }, {
        "code": "boolean"
      }, {
        "code": "code"
      }, {
        "code": "date"
      }, {
        "code": "dateTime"
      }, {
        "code": "decimal"
      }, {
        "code": "id"
      }, {
        "code": "instant"
      }, {
        "code": "integer"
      }, {
        "code": "markdown"
      }, {
        "code": "oid"
      }, {
        "code": "positiveInt"
      }, {
        "code": "string"
      }, {
        "code": "time"
      }, {
        "code": "unsignedInt"
      }, {
        "code": "uri"
      }, {
        "code": "Address"
      }, {
        "code": "Age"
      }, {
        "code": "Annotation"
      }, {
        "code": "Attachment"
      }, {
        "code": "CodeableConcept"
      }, {
        "code": "Coding"
      }, {
        "code": "ContactPoint"
      }, {
        "code": "Count"
      }, {
        "code": "Distance"
      }, {
        "code": "Duration"
      }, {
        "code": "HumanName"
      }, {
        "code": "Identifier"
      }, {
        "code": "Money"
      }, {
        "code": "Period"
      }, {
        "code": "Quantity"
      }, {
        "code": "Range"
      }, {
        "code": "Ratio"
      }, {
        "code": "Reference"
      }, {
        "code": "SampledData"
      }, {
        "code": "Signature"
      }, {
        "code": "Timing"
      }, {
        "code": "Meta"
      } ],
      "max": "0",
      "id": "Extension.extension:repeatUnit.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
      "path": "Extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "http://hl7.org/fhir/4.0/StructureDefinition/extension-SubstancePolymer.repeat",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.value[x]",
      "min": 0,
      "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
      "short": "Value of extension",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "base64Binary"
      }, {
        "code": "boolean"
      }, {
        "code": "code"
      }, {
        "code": "date"
      }, {
        "code": "dateTime"
      }, {
        "code": "decimal"
      }, {
        "code": "id"
      }, {
        "code": "instant"
      }, {
        "code": "integer"
      }, {
        "code": "markdown"
      }, {
        "code": "oid"
      }, {
        "code": "positiveInt"
      }, {
        "code": "string"
      }, {
        "code": "time"
      }, {
        "code": "unsignedInt"
      }, {
        "code": "uri"
      }, {
        "code": "Address"
      }, {
        "code": "Age"
      }, {
        "code": "Annotation"
      }, {
        "code": "Attachment"
      }, {
        "code": "CodeableConcept"
      }, {
        "code": "Coding"
      }, {
        "code": "ContactPoint"
      }, {
        "code": "Count"
      }, {
        "code": "Distance"
      }, {
        "code": "Duration"
      }, {
        "code": "HumanName"
      }, {
        "code": "Identifier"
      }, {
        "code": "Money"
      }, {
        "code": "Period"
      }, {
        "code": "Quantity"
      }, {
        "code": "Range"
      }, {
        "code": "Ratio"
      }, {
        "code": "Reference"
      }, {
        "code": "SampledData"
      }, {
        "code": "Signature"
      }, {
        "code": "Timing"
      }, {
        "code": "Meta"
      } ],
      "max": "0",
      "id": "Extension.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    } ]
  },
  "status": "active",
  "id": "3fca853e-2268-41fe-9d24-39894d4b3a6b",
  "kind": "complex-type",
  "url": "http://hl7.org/fhir/4.0/StructureDefinition/extension-SubstancePolymer.repeat",
  "context": [ "Basic" ],
  "version": "0.1.0",
  "differential": {
    "element": [ {
      "path": "Extension",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat` (new:BackboneElement)",
      "isModifier": false,
      "short": "R4: Todo (new)",
      "max": "*",
      "id": "Extension",
      "comment": "Element `SubstancePolymer.repeat` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension"
      }
    }, {
      "id": "Extension.extension",
      "max": "*",
      "min": 0,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      },
      "path": "Extension.extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      }
    }, {
      "path": "Extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.numberOfUnits` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.numberOfUnits` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.numberOfUnits` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.numberOfUnits` (new:integer)",
      "short": "R4: Todo (new)",
      "sliceName": "numberOfUnits",
      "max": "1",
      "id": "Extension.extension:numberOfUnits",
      "comment": "Element `SubstancePolymer.repeat.numberOfUnits` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.numberOfUnits` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.numberOfUnits` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:numberOfUnits.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.url",
      "fixedUri": "numberOfUnits"
    }, {
      "id": "Extension.extension:numberOfUnits.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.value[x]",
      "type": [ {
        "code": "integer"
      } ],
      "short": "Todo",
      "definition": "Todo."
    }, {
      "path": "Extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.averageMolecularFormula` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.averageMolecularFormula` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.averageMolecularFormula` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.averageMolecularFormula` (new:string)",
      "short": "R4: Todo (new)",
      "sliceName": "averageMolecularFormula",
      "max": "1",
      "id": "Extension.extension:averageMolecularFormula",
      "comment": "Element `SubstancePolymer.repeat.averageMolecularFormula` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.averageMolecularFormula` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.averageMolecularFormula` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:averageMolecularFormula.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.url",
      "fixedUri": "averageMolecularFormula"
    }, {
      "id": "Extension.extension:averageMolecularFormula.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.value[x]",
      "type": [ {
        "code": "string"
      } ],
      "short": "Todo",
      "definition": "Todo."
    }, {
      "path": "Extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnitAmountType` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnitAmountType` (new:CodeableConcept)",
      "short": "R4: Todo (new)",
      "sliceName": "repeatUnitAmountType",
      "max": "1",
      "id": "Extension.extension:repeatUnitAmountType",
      "comment": "Element `SubstancePolymer.repeat.repeatUnitAmountType` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnitAmountType.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.url",
      "fixedUri": "repeatUnitAmountType"
    }, {
      "id": "Extension.extension:repeatUnitAmountType.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.value[x]",
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "short": "Todo",
      "definition": "Todo."
    }, {
      "path": "Extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit` (new:BackboneElement)",
      "short": "R4: Todo (new)",
      "sliceName": "repeatUnit",
      "max": "*",
      "id": "Extension.extension:repeatUnit",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension",
      "max": "*",
      "min": 0,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      },
      "path": "Extension.extension.extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      }
    }, {
      "path": "Extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` (new:CodeableConcept)",
      "short": "R4: Todo (new)",
      "sliceName": "orientationOfPolymerisation",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:orientationOfPolymerisation",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.orientationOfPolymerisation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:orientationOfPolymerisation.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.url",
      "fixedUri": "orientationOfPolymerisation"
    }, {
      "id": "Extension.extension:repeatUnit.extension:orientationOfPolymerisation.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.value[x]",
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "short": "Todo",
      "definition": "Todo."
    }, {
      "path": "Extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.repeatUnit` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.repeatUnit` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.repeatUnit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.repeatUnit` (new:string)",
      "short": "R4: Todo (new)",
      "sliceName": "repeatUnit",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:repeatUnit",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.repeatUnit` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.repeatUnit` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.repeatUnit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:repeatUnit.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.url",
      "fixedUri": "repeatUnit"
    }, {
      "id": "Extension.extension:repeatUnit.extension:repeatUnit.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.value[x]",
      "type": [ {
        "code": "string"
      } ],
      "short": "Todo",
      "definition": "Todo."
    }, {
      "path": "Extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.amount` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.amount` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.amount` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.amount` (new:SubstanceAmount)",
      "short": "R4: Todo (new)",
      "sliceName": "amount",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.amount` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.amount` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.amount` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension",
      "max": "*",
      "min": 0,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      },
      "path": "Extension.extension.extension.extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:_datatype",
      "max": "1",
      "min": 1,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      },
      "path": "Extension.extension.extension.extension",
      "short": "DataType slice for a FHIR R4 `SubstanceAmount` value",
      "sliceName": "_datatype",
      "definition": "Slice to indicate the presence of a R4 `SubstanceAmount` in FHIR STU3"
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:_datatype.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.url",
      "fixedUri": "http://hl7.org/fhir/StructureDefinition/_datatype"
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:_datatype.value[x]",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "string"
      } ],
      "comment": "Must be: SubstanceAmount",
      "fixedString": "SubstanceAmount"
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.amount[x]` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amount[x]` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.amount[x]` (new:Quantity, Range, string)",
      "short": "R4: Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field (new)",
      "sliceName": "amount",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amount",
      "comment": "Element `SubstanceAmount.amount[x]` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amount[x]` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amount.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.url",
      "fixedUri": "amount"
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amount.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "Quantity"
      }, {
        "code": "Range"
      }, {
        "code": "string"
      } ],
      "short": "Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field",
      "definition": "Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field."
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.amountType` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountType` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.amountType` (new:CodeableConcept)",
      "short": "R4: Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements (new)",
      "sliceName": "amountType",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountType",
      "comment": "Element `SubstanceAmount.amountType` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountType` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountType.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.url",
      "fixedUri": "amountType"
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountType.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "short": "Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements",
      "definition": "Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements."
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.amountText` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountText` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.amountText` (new:string)",
      "short": "R4: A textual comment on a numeric value (new)",
      "sliceName": "amountText",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountText",
      "comment": "Element `SubstanceAmount.amountText` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountText` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountText.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.url",
      "fixedUri": "amountText"
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:amountText.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "string"
      } ],
      "short": "A textual comment on a numeric value",
      "definition": "A textual comment on a numeric value."
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.referenceRange` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.referenceRange` (new:Element)",
      "short": "R4: Reference range of possible or expected values (new)",
      "sliceName": "referenceRange",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange",
      "comment": "Element `SubstanceAmount.referenceRange` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension",
      "max": "*",
      "min": 0,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      },
      "path": "Extension.extension.extension.extension.extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      }
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.referenceRange.lowLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.lowLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.lowLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.referenceRange.lowLimit` (new:Quantity)",
      "short": "R4: Lower limit possible or expected (new)",
      "sliceName": "lowLimit",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:lowLimit",
      "comment": "Element `SubstanceAmount.referenceRange.lowLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.lowLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.lowLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:lowLimit.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.extension.url",
      "fixedUri": "lowLimit"
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:lowLimit.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "Quantity"
      } ],
      "short": "Lower limit possible or expected",
      "definition": "Lower limit possible or expected."
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.referenceRange.highLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.highLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.highLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.referenceRange.highLimit` (new:Quantity)",
      "short": "R4: Upper limit possible or expected (new)",
      "sliceName": "highLimit",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:highLimit",
      "comment": "Element `SubstanceAmount.referenceRange.highLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.highLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.highLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:highLimit.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.extension.url",
      "fixedUri": "highLimit"
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.extension:highLimit.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "Quantity"
      } ],
      "short": "Upper limit possible or expected",
      "definition": "Upper limit possible or expected."
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.url",
      "fixedUri": "referenceRange"
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.extension:referenceRange.value[x]",
      "max": "0",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.value[x]"
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.url",
      "fixedUri": "amount"
    }, {
      "id": "Extension.extension:repeatUnit.extension:amount.value[x]",
      "max": "0",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.value[x]"
    }, {
      "path": "Extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` (new:BackboneElement)",
      "short": "R4: Todo (new)",
      "sliceName": "degreeOfPolymerisation",
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension",
      "max": "*",
      "min": 0,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      },
      "path": "Extension.extension.extension.extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` (new:CodeableConcept)",
      "short": "R4: Todo (new)",
      "sliceName": "degree",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:degree",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.degree` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:degree.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.url",
      "fixedUri": "degree"
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:degree.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "short": "Todo",
      "definition": "Todo."
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` (new:SubstanceAmount)",
      "short": "R4: Todo (new)",
      "sliceName": "amount",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.amount` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension",
      "max": "*",
      "min": 0,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      },
      "path": "Extension.extension.extension.extension.extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:_datatype",
      "max": "1",
      "min": 1,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      },
      "path": "Extension.extension.extension.extension.extension",
      "short": "DataType slice for a FHIR R4 `SubstanceAmount` value",
      "sliceName": "_datatype",
      "definition": "Slice to indicate the presence of a R4 `SubstanceAmount` in FHIR STU3"
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:_datatype.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.extension.url",
      "fixedUri": "http://hl7.org/fhir/StructureDefinition/_datatype"
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:_datatype.value[x]",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "string"
      } ],
      "comment": "Must be: SubstanceAmount",
      "fixedString": "SubstanceAmount"
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.amount[x]` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amount[x]` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.amount[x]` (new:Quantity, Range, string)",
      "short": "R4: Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field (new)",
      "sliceName": "amount",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amount",
      "comment": "Element `SubstanceAmount.amount[x]` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amount[x]` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amount.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.extension.url",
      "fixedUri": "amount"
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amount.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "Quantity"
      }, {
        "code": "Range"
      }, {
        "code": "string"
      } ],
      "short": "Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field",
      "definition": "Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field."
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.amountType` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountType` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.amountType` (new:CodeableConcept)",
      "short": "R4: Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements (new)",
      "sliceName": "amountType",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountType",
      "comment": "Element `SubstanceAmount.amountType` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountType` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountType.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.extension.url",
      "fixedUri": "amountType"
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountType.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "short": "Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements",
      "definition": "Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements."
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.amountText` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountText` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.amountText` (new:string)",
      "short": "R4: A textual comment on a numeric value (new)",
      "sliceName": "amountText",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountText",
      "comment": "Element `SubstanceAmount.amountText` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.amountText` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountText.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.extension.url",
      "fixedUri": "amountText"
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:amountText.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "string"
      } ],
      "short": "A textual comment on a numeric value",
      "definition": "A textual comment on a numeric value."
    }, {
      "path": "Extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.referenceRange` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.referenceRange` (new:Element)",
      "short": "R4: Reference range of possible or expected values (new)",
      "sliceName": "referenceRange",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange",
      "comment": "Element `SubstanceAmount.referenceRange` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension",
      "max": "*",
      "min": 0,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      },
      "path": "Extension.extension.extension.extension.extension.extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      }
    }, {
      "path": "Extension.extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.referenceRange.lowLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.lowLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.lowLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.referenceRange.lowLimit` (new:Quantity)",
      "short": "R4: Lower limit possible or expected (new)",
      "sliceName": "lowLimit",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:lowLimit",
      "comment": "Element `SubstanceAmount.referenceRange.lowLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.lowLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.lowLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:lowLimit.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.extension.extension.url",
      "fixedUri": "lowLimit"
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:lowLimit.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "Quantity"
      } ],
      "short": "Lower limit possible or expected",
      "definition": "Lower limit possible or expected."
    }, {
      "path": "Extension.extension.extension.extension.extension.extension",
      "requirements": "Element `SubstanceAmount.referenceRange.highLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.highLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.highLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstanceAmount.referenceRange.highLimit` (new:Quantity)",
      "short": "R4: Upper limit possible or expected (new)",
      "sliceName": "highLimit",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:highLimit",
      "comment": "Element `SubstanceAmount.referenceRange.highLimit` is part of an existing definition because parent element `SubstanceAmount.referenceRange` requires a cross-version extension.\nElement `SubstanceAmount.referenceRange.highLimit` is not mapped to FHIR STU3, since FHIR R4 `SubstanceAmount` is not mapped.\nElement `SubstanceAmount.referenceRange.highLimit` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:highLimit.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.extension.extension.url",
      "fixedUri": "highLimit"
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.extension:highLimit.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "Quantity"
      } ],
      "short": "Upper limit possible or expected",
      "definition": "Upper limit possible or expected."
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.extension.url",
      "fixedUri": "referenceRange"
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.extension:referenceRange.value[x]",
      "max": "0",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.extension.value[x]"
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.url",
      "fixedUri": "amount"
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:amount.value[x]",
      "max": "0",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.value[x]"
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.url",
      "fixedUri": "degreeOfPolymerisation"
    }, {
      "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.value[x]",
      "max": "0",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.value[x]"
    }, {
      "path": "Extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` (new:BackboneElement)",
      "short": "R4: Todo (new)",
      "sliceName": "structuralRepresentation",
      "max": "*",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension",
      "max": "*",
      "min": 0,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      },
      "path": "Extension.extension.extension.extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      }
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` (new:CodeableConcept)",
      "short": "R4: Todo (new)",
      "sliceName": "type",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.url",
      "fixedUri": "type"
    }, {
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "short": "Todo",
      "definition": "Todo."
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` (new:string)",
      "short": "R4: Todo (new)",
      "sliceName": "representation",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.url",
      "fixedUri": "representation"
    }, {
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "string"
      } ],
      "short": "Todo",
      "definition": "Todo."
    }, {
      "path": "Extension.extension.extension.extension",
      "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "min": 0,
      "definition": "R4: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` (new:Attachment)",
      "short": "R4: Todo (new)",
      "sliceName": "attachment",
      "max": "1",
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment",
      "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is not mapped to FHIR STU3, since FHIR R4 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension.extension"
      }
    }, {
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.extension.url",
      "fixedUri": "attachment"
    }, {
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment.value[x]",
      "max": "1",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.extension.value[x]",
      "type": [ {
        "code": "Attachment"
      } ],
      "short": "Todo",
      "definition": "Todo."
    }, {
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.extension.url",
      "fixedUri": "structuralRepresentation"
    }, {
      "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.value[x]",
      "max": "0",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.extension.value[x]"
    }, {
      "id": "Extension.extension:repeatUnit.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.extension.url",
      "fixedUri": "repeatUnit"
    }, {
      "id": "Extension.extension:repeatUnit.value[x]",
      "max": "0",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.extension.value[x]"
    }, {
      "id": "Extension.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.url",
      "fixedUri": "http://hl7.org/fhir/4.0/StructureDefinition/extension-SubstancePolymer.repeat"
    }, {
      "id": "Extension.value[x]",
      "max": "0",
      "min": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.value[x]"
    } ]
  },
  "contact": [ {
    "name": "FHIR Infrastructure",
    "telecom": [ {
      "value": "http://www.hl7.org/Special/committees/fiwg",
      "system": "url"
    } ]
  } ],
  "contextType": "resource",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}