description: This cross-version extension represents ClinicalImpression.trigger[x] from http://hl7.org/fhir/StructureDefinition/ClinicalImpression|1.0.2 for use in FHIR R4B.
package_name: hl7.fhir.uv.xver-r2.r4b
derivation: constraint
name: ext_R2_ClinicalImpression_trigger
type: Extension
elements:
  value:
    base: {path: 'Extension.value[x]'}
    short: Request or event that necessitated this assessment
    choices: [valueCodeableConcept, valueReference]
    index: 1
  valueCodeableConcept:
    base: {path: 'Extension.value[x]'}
    type: CodeableConcept
    short: Request or event that necessitated this assessment
    choiceOf: value
    index: 2
  valueReference:
    base: {path: 'Extension.value[x]'}
    type: Reference
    short: Request or event that necessitated this assessment
    choiceOf: value
    refers: ['http://hl7.org/fhir/StructureDefinition/Resource']
    index: 3
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/1.0/StructureDefinition/extension-ClinicalImpression.trigger'}
    index: 4
package_version: 0.0.1-snapshot-1
class: extension
kind: complex-type
url: http://hl7.org/fhir/1.0/StructureDefinition/extension-ClinicalImpression.trigger
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 0.0.1-snapshot-1
required: [url]