description: 'DSTU2: `ClinicalImpression.trigger[x]` (new:CodeableConcept, Reference(Resource))'
package_name: hl7.fhir.uv.xver-r2.r5
derivation: constraint
name: ExtensionClinicalImpression_Trigger
type: Extension
elements:
  url:
    base: {max: '1', min: 1, path: Extension.url}
    pattern: {type: Uri, value: 'http://hl7.org/fhir/1.0/StructureDefinition/extension-ClinicalImpression.trigger'}
    index: 0
  value:
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    short: Request or event that necessitated this assessment
    choices: [valueCodeableConcept, valueReference]
    index: 2
  valueCodeableConcept:
    short: Request or event that necessitated this assessment
    type: CodeableConcept
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    choiceOf: value
    index: 3
  valueReference:
    short: Request or event that necessitated this assessment
    refers: ['http://hl7.org/fhir/1.0/StructureDefinition/profile-Resource|0.1.0', 'http://hl7.org/fhir/StructureDefinition/Resource|5.0.0']
    type: Reference
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    choiceOf: value
    index: 4
package_version: 0.1.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/1.0/StructureDefinition/extension-ClinicalImpression.trigger
base: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0
version: 0.1.0
required: [url]