{
  "description": "R4B: `ImplementationGuide.fhirVersion` additional types (code) additional types from child elements (value)",
  "_filename": "StructureDefinition-ext-R4B-ImplementationGuide.fhirVersion.json",
  "package_name": "hl7.fhir.uv.xver-r4b.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 `ImplementationGuide.fhirVersion` as defined in FHIR R4B\r\nin FHIR STU3.\r\n\r\nThe source element is defined as:\r\n`ImplementationGuide.fhirVersion` 1..* `code`\r\n\r\nAcross FHIR versions, the element set has been mapped as:\r\n*  R4B: `ImplementationGuide.fhirVersion` 1..* `code`\n*  R4: `ImplementationGuide.fhirVersion` 1..* `code`\n*  STU3: `ImplementationGuide.fhirVersion` 0..1 `id`\r\n\r\nFollowing are the generation technical comments:\r\nElement `ImplementationGuide.fhirVersion` is mapped to FHIR STU3 element `ImplementationGuide.fhirVersion` as `SourceIsBroaderThanTarget`.\nThe mappings for `ImplementationGuide.fhirVersion` do not cover the following types: code.\nThe mappings for `ImplementationGuide.fhirVersion` do not cover the following types based on type expansion: value.",
  "name": "ExtensionImplementationGuide_FhirVersion",
  "mapping": [ {
    "uri": "http://hl7.org/v3",
    "name": "RIM Mapping",
    "identity": "rim"
  } ],
  "abstract": false,
  "type": "Extension",
  "experimental": "false",
  "resourceType": "StructureDefinition",
  "title": "R4B: FHIR Version(s) this Implementation Guide targets additional types",
  "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-r4b.r3"
    }, {
      "url": "version",
      "valueString": "0.1.0"
    }, {
      "url": "uri",
      "valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4b.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-r4b.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-r4b.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": 1,
      "definition": "R4B: `ImplementationGuide.fhirVersion` additional types (code) additional types from child elements (value)",
      "isModifier": false,
      "short": "R4B: FHIR Version(s) this Implementation Guide targets additional types",
      "max": "*",
      "id": "Extension",
      "condition": [ "ele-1" ],
      "comment": "Element `ImplementationGuide.fhirVersion` is mapped to FHIR STU3 element `ImplementationGuide.fhirVersion` as `SourceIsBroaderThanTarget`.\nThe mappings for `ImplementationGuide.fhirVersion` do not cover the following types: code.\nThe mappings for `ImplementationGuide.fhirVersion` do not cover the following types based on type expansion: value.\nMost implementation guides target a single version - e.g. they describe how to use a particular version, and the profiles and examples etc are valid for that version. But some implementation guides describe how to use multiple different versions of FHIR to solve the same problem, or in concert with each other. Typically, the requirement to support multiple versions arises as implementation matures and different implementation communities are stuck at different versions by regulation or market dynamics.",
      "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": "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",
      "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.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/4.3/StructureDefinition/extension-ImplementationGuide.fhirVersion",
      "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": 1,
      "definition": "The version(s) of the FHIR specification that this ImplementationGuide targets - e.g. describes how to use. The value of this element is the formal version of the specification, without the revision number, e.g. [publication].[major].[minor], which is 4.3.0. for this version.",
      "short": "FHIR Version(s) this Implementation Guide targets",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "code"
      } ],
      "binding": {
        "strength": "required",
        "description": "All published FHIR Versions.",
        "valueSetUri": "http://hl7.org/fhir/uv/xver/ValueSet/R4B-FHIR-version-for-R3|0.1.0"
      },
      "max": "1",
      "id": "Extension.value[x]",
      "comment": "Most implementation guides target a single version - e.g. they describe how to use a particular version, and the profiles and examples etc are valid for that version. But some implementation guides describe how to use multiple different versions of FHIR to solve the same problem, or in concert with each other. Typically, the requirement to support multiple versions arises as implementation matures and different implementation communities are stuck at different versions by regulation or market dynamics.",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    } ]
  },
  "status": "active",
  "id": "88305a5e-f9df-4b52-8810-efa0377a7c35",
  "kind": "complex-type",
  "url": "http://hl7.org/fhir/4.3/StructureDefinition/extension-ImplementationGuide.fhirVersion",
  "context": [ "ImplementationGuide.fhirVersion" ],
  "version": "0.1.0",
  "differential": {
    "element": [ {
      "path": "Extension",
      "min": 1,
      "definition": "R4B: `ImplementationGuide.fhirVersion` additional types (code) additional types from child elements (value)",
      "isModifier": false,
      "short": "R4B: FHIR Version(s) this Implementation Guide targets additional types",
      "max": "*",
      "id": "Extension",
      "comment": "Element `ImplementationGuide.fhirVersion` is mapped to FHIR STU3 element `ImplementationGuide.fhirVersion` as `SourceIsBroaderThanTarget`.\nThe mappings for `ImplementationGuide.fhirVersion` do not cover the following types: code.\nThe mappings for `ImplementationGuide.fhirVersion` do not cover the following types based on type expansion: value.\nMost implementation guides target a single version - e.g. they describe how to use a particular version, and the profiles and examples etc are valid for that version. But some implementation guides describe how to use multiple different versions of FHIR to solve the same problem, or in concert with each other. Typically, the requirement to support multiple versions arises as implementation matures and different implementation communities are stuck at different versions by regulation or market dynamics.",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension"
      }
    }, {
      "id": "Extension.url",
      "max": "1",
      "min": 1,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "path": "Extension.url",
      "fixedUri": "http://hl7.org/fhir/4.3/StructureDefinition/extension-ImplementationGuide.fhirVersion"
    }, {
      "path": "Extension.value[x]",
      "min": 1,
      "definition": "The version(s) of the FHIR specification that this ImplementationGuide targets - e.g. describes how to use. The value of this element is the formal version of the specification, without the revision number, e.g. [publication].[major].[minor], which is 4.3.0. for this version.",
      "short": "FHIR Version(s) this Implementation Guide targets",
      "type": [ {
        "code": "code"
      } ],
      "binding": {
        "strength": "required",
        "description": "All published FHIR Versions.",
        "valueSetUri": "http://hl7.org/fhir/uv/xver/ValueSet/R4B-FHIR-version-for-R3|0.1.0"
      },
      "max": "1",
      "id": "Extension.value[x]",
      "comment": "Most implementation guides target a single version - e.g. they describe how to use a particular version, and the profiles and examples etc are valid for that version. But some implementation guides describe how to use multiple different versions of FHIR to solve the same problem, or in concert with each other. Typically, the requirement to support multiple versions arises as implementation matures and different implementation communities are stuck at different versions by regulation or market dynamics.",
      "base": {
        "max": "1",
        "min": 0,
        "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"
}