{
  "description": "External Identifiers associated with this element - these are identifiers that are associated with the concept this element represents.",
  "_filename": "StructureDefinition-elementdefinition-identifier.json",
  "package_name": "rs/hl7.fhir.r2b.core",
  "date": null,
  "derivation": "constraint",
  "publisher": "Health Level Seven, Inc. - FHIR Core WG",
  "fhirVersion": "1.6.0",
  "name": "External Identifier associated with this element",
  "mapping": [ {
    "uri": "http://hl7.org/v2",
    "name": "HL7 v2",
    "identity": "v2"
  }, {
    "uri": "http://hl7.org/v3",
    "name": "RIM",
    "identity": "rim"
  } ],
  "baseType": "Extension",
  "abstract": false,
  "type": null,
  "experimental": "false",
  "resourceType": "StructureDefinition",
  "title": null,
  "package_version": "1.4.0",
  "snapshot": {
    "element": [ {
      "path": "Extension",
      "min": 0,
      "definition": "External Identifiers associated with this element - these are identifiers that are associated with the concept this element represents.",
      "isModifier": false,
      "short": "External Identifier associated with this element",
      "mapping": [ {
        "map": "N/A",
        "identity": "v2"
      }, {
        "map": "Act.id, Role.id, Entity.id",
        "identity": "rim"
      } ],
      "mustSupport": false,
      "max": "*",
      "maxLength": 0,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension"
      },
      "isSummary": false
    }, {
      "path": "Extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references).",
      "isModifier": false,
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "id"
      } ],
      "mustSupport": false,
      "representation": [ "xmlAttr" ],
      "max": "1",
      "maxLength": 0,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.id"
      },
      "isSummary": false
    }, {
      "path": "Extension.extension",
      "min": 0,
      "definition": "An Extension",
      "isModifier": false,
      "short": "Extension",
      "name": "extension",
      "type": [ {
        "code": "Extension"
      } ],
      "mustSupport": false,
      "max": "0",
      "maxLength": 0,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      },
      "isSummary": false
    }, {
      "path": "Extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "isModifier": false,
      "short": "identifies the meaning of the extension",
      "fixedUri": "http://hl7.org/fhir/StructureDefinition/elementdefinition-identifier",
      "comments": "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 should be version specific.  This will ideally be the URI for the Resource Profile defining the extension, with the code for the extension after a #.",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "mustSupport": false,
      "representation": [ "xmlAttr" ],
      "max": "1",
      "maxLength": 0,
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      },
      "isSummary": false
    }, {
      "path": "Extension.valueIdentifier",
      "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).",
      "isModifier": false,
      "short": "Value of extension",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "Identifier"
      } ],
      "mustSupport": false,
      "max": "1",
      "maxLength": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "isSummary": false
    } ]
  },
  "status": "draft",
  "id": "378c81aa-9fd8-4c54-8fb2-f214f11d9f74",
  "kind": "datatype",
  "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-identifier",
  "context": [ "ElementDefinition" ],
  "version": null,
  "differential": {
    "element": [ {
      "path": "Extension",
      "min": 0,
      "definition": "External Identifiers associated with this element - these are identifiers that are associated with the concept this element represents.",
      "isModifier": false,
      "short": "External Identifier associated with this element",
      "mapping": [ {
        "map": "N/A",
        "identity": "v2"
      }, {
        "map": "Act.id, Role.id, Entity.id",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "Extension"
      } ],
      "mustSupport": false,
      "max": "*",
      "maxLength": 0,
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension"
      },
      "isSummary": false
    }, {
      "path": "Extension.extension",
      "min": 0,
      "isModifier": false,
      "name": "extension",
      "mustSupport": false,
      "max": "0",
      "maxLength": 0,
      "base": {
        "max": "0",
        "min": 0,
        "path": "Extension.extension"
      },
      "isSummary": false
    }, {
      "path": "Extension.url",
      "min": 0,
      "isModifier": false,
      "fixedUri": "http://hl7.org/fhir/StructureDefinition/elementdefinition-identifier",
      "type": [ {
        "code": "uri"
      } ],
      "mustSupport": false,
      "maxLength": 0,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.url"
      },
      "isSummary": false
    }, {
      "min": 1,
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      },
      "path": "Extension.value[x]",
      "type": [ {
        "code": "Identifier"
      } ],
      "isSummary": false,
      "maxLength": 0,
      "isModifier": false,
      "mustSupport": false
    } ]
  },
  "contact": [ {
    "telecom": [ {
      "rank": 1,
      "value": "http://hl7.org/special/committees/FHIR",
      "system": "other"
    } ]
  } ],
  "contextType": "datatype",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}