description: 'R5: `AllergyIntolerance.type` additional types (CodeableConcept) additional types from child elements (coding)'
package_name: hl7.fhir.uv.xver-r5.r3
derivation: constraint
name: ExtensionAllergyIntolerance_Type
type: Extension
elements:
  url:
    base: {max: '1', min: 1, path: Extension.url}
    pattern: {type: Uri, value: 'http://hl7.org/fhir/5.0/StructureDefinition/extension-AllergyIntolerance.type'}
    index: 0
  value:
    short: allergy | intolerance - Underlying mechanism (if known)
    choices: [valueCodeableConcept]
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    index: 2
  valueCodeableConcept:
    short: allergy | intolerance - Underlying mechanism (if known)
    type: CodeableConcept
    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/5.0/StructureDefinition/extension-AllergyIntolerance.type
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 0.1.0
required: [url]