description: 'STU3: `ConceptMap.source[x]` additional types (Reference(http://hl7.org/fhir/StructureDefinition/ValueSet)) additional types from child elements (display, identifier, reference)'
package_name: hl7.fhir.uv.xver-r3.r4b
derivation: constraint
name: ExtensionConceptMap_Source
type: Extension
elements:
  url:
    base: {max: '1', min: 1, path: Extension.url}
    pattern: {type: Uri, value: 'http://hl7.org/fhir/3.0/StructureDefinition/extension-ConceptMap.source'}
    index: 0
  value:
    short: Identifies the source of the concepts which are being mapped
    choices: [valueReference]
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    index: 2
  valueReference:
    short: Identifies the source of the concepts which are being mapped
    refers: ['http://hl7.org/fhir/3.0/StructureDefinition/profile-ValueSet|0.1.0', 'http://hl7.org/fhir/StructureDefinition/ValueSet|4.3.0']
    type: Reference
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    choiceOf: value
    index: 3
package_version: 0.1.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/3.0/StructureDefinition/extension-ConceptMap.source
base: http://hl7.org/fhir/StructureDefinition/Extension|4.3.0
version: 0.1.0
required: [url]