{
  "description": "The radiation energy used for radiotherapy. The energy spectrum is characterized\\nby the maximum energy, the maximum accelaration voltage, or the used isotope.",
  "_filename": "StructureDefinition-codexrt-radiotherapy-energy-or-isotope.json",
  "package_name": "hl7.fhir.us.codex-radiation-therapy",
  "date": "2022-08-08T14:42:13+00:00",
  "derivation": "constraint",
  "publisher": "HL7 Cross Group Projects Work Group",
  "fhirVersion": "4.0.1",
  "jurisdiction": [ {
    "coding": [ {
      "code": "US",
      "system": "urn:iso:std:iso:3166",
      "display": "United States of America"
    } ]
  } ],
  "name": "RadiotherapyEnergyOrIsotope",
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    "uri": "http://hl7.org/v3",
    "name": "RIM Mapping",
    "identity": "rim"
  } ],
  "abstract": false,
  "type": "Extension",
  "experimental": null,
  "resourceType": "StructureDefinition",
  "title": "Radiotherapy Energy or Isotope",
  "package_version": "1.0.0-ballot",
  "snapshot": {
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        "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() or (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": "The radiation energy used for radiotherapy. The energy spectrum is characterized\nby the maximum energy, the maximum accelaration voltage, or the used isotope.",
      "isModifier": false,
      "short": "Radiotherapy Energy or Isotope",
      "max": "*",
      "id": "Extension",
      "condition": [ "ele-1" ],
      "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.",
      "isModifier": false,
      "short": "Unique id for inter-element referencing",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
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        "code": "http://hl7.org/fhirpath/System.String",
        "extension": [ {
          "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
          "valueUrl": "string"
        } ]
      } ],
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        "min": 0,
        "path": "Element.id"
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    }, {
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        "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() or (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.extension",
      "min": 0,
      "definition": "An Extension",
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      "short": "Extension",
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        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
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      "max": "0",
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      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      },
      "isSummary": false
    }, {
      "path": "Extension.url",
      "min": 1,
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      "isModifier": false,
      "short": "identifies the meaning of the extension",
      "fixedUri": "http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-energy-or-isotope",
      "mapping": [ {
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      "max": "1",
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      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "isSummary": false
    }, {
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        "severity": "error",
        "expression": "hasValue() or (children().count() > id.count())"
      } ],
      "path": "Extension.value[x]",
      "min": 1,
      "definition": "Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R4/extensibility.html) for a list).",
      "isModifier": false,
      "short": "Value of extension",
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        "source": "http://hl7.org/fhir/StructureDefinition/Element",
        "severity": "error",
        "expression": "hasValue() or (children().count() > id.count())"
      }, {
        "key": "qty-3",
        "human": "If a code for the unit is present, the system SHALL also be present",
        "xpath": "not(exists(f:code)) or exists(f:system)",
        "source": "http://hl7.org/fhir/StructureDefinition/Quantity",
        "severity": "error",
        "expression": "code.empty() or system.exists()"
      }, {
        "key": "sqty-1",
        "human": "The comparator is not used on a SimpleQuantity",
        "xpath": "not(exists(f:comparator))",
        "source": "http://hl7.org/fhir/StructureDefinition/Extension",
        "severity": "error",
        "expression": "comparator.empty()"
      } ],
      "path": "Extension.value[x]",
      "min": 0,
      "definition": "The comparator is not used on a SimpleQuantity",
      "isModifier": false,
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        "map": "n/a",
        "identity": "rim"
      }, {
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        "map": "PQ, IVL, MO, CO, depending on the values",
        "identity": "rim"
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        "strength": "required",
        "valueSet": "http://hl7.org/fhir/us/codex-radiation-therapy/ValueSet/radiotherapy-energy-units"
      },
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      "id": "Extension.value[x]:valueQuantity",
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      "comment": "The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    }, {
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        "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() or (children().count() > id.count())"
      } ],
      "path": "Extension.value[x]",
      "min": 0,
      "definition": "Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R4/extensibility.html) for a list).",
      "isModifier": false,
      "short": "The isotope used for radiotherapy.",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "sliceName": "valueCodeableConcept",
      "binding": {
        "strength": "extensible",
        "valueSet": "http://hl7.org/fhir/us/codex-radiation-therapy/ValueSet/codex-radiotherapy-isotopes"
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      "max": "1",
      "id": "Extension.value[x]:valueCodeableConcept",
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        "path": "Extension.value[x]"
      },
      "isSummary": false
    } ]
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    "type": "element",
    "expression": "Element"
  } ],
  "version": "1.0.0-ballot",
  "differential": {
    "element": [ {
      "id": "Extension",
      "path": "Extension",
      "short": "Radiotherapy Energy or Isotope",
      "definition": "The radiation energy used for radiotherapy. The energy spectrum is characterized\nby the maximum energy, the maximum accelaration voltage, or the used isotope."
    }, {
      "id": "Extension.extension",
      "max": "0",
      "path": "Extension.extension"
    }, {
      "id": "Extension.url",
      "path": "Extension.url",
      "fixedUri": "http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-energy-or-isotope"
    }, {
      "id": "Extension.value[x]",
      "min": 1,
      "path": "Extension.value[x]",
      "type": [ {
        "code": "CodeableConcept"
      }, {
        "code": "Quantity",
        "profile": [ "http://hl7.org/fhir/StructureDefinition/SimpleQuantity" ]
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        "ordered": false,
        "discriminator": [ {
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          "type": "type"
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    }, {
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      "path": "Extension.valueQuantity",
      "type": [ {
        "code": "Quantity",
        "profile": [ "http://hl7.org/fhir/StructureDefinition/SimpleQuantity" ]
      } ],
      "short": "The spectrum of radiation energy characterized by a maximum value.\nFor electrons, the maximum energy is given in MeV. For photons, the maximum acceleration voltage is given in MV or kV, although those are not units of energy.",
      "binding": {
        "strength": "required",
        "valueSet": "http://hl7.org/fhir/us/codex-radiation-therapy/ValueSet/radiotherapy-energy-units"
      }
    }, {
      "id": "Extension.valueCodeableConcept",
      "max": "1",
      "min": 0,
      "path": "Extension.valueCodeableConcept",
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "short": "The isotope used for radiotherapy.",
      "binding": {
        "strength": "extensible",
        "valueSet": "http://hl7.org/fhir/us/codex-radiation-therapy/ValueSet/codex-radiotherapy-isotopes"
      }
    } ]
  },
  "contact": [ {
    "name": "HL7 Cross Group Projects Work Group",
    "telecom": [ {
      "value": "https://www.hl7.org/Special/committees/cgp",
      "system": "url"
    }, {
      "value": "cgplist@lists.HL7.org",
      "system": "email"
    } ]
  } ],
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}