description: The canonical URL for the source value set for the answer options, when those options are provided directly in the questionnaire. package_name: hl7.fhir.uv.cpg derivation: constraint name: CPGAnswerValueSetSource type: Extension elements: url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-answerValueSetSource'} index: 0 value: choices: [valueCanonical] index: 2 valueCanonical: {type: canonical, choiceOf: value, index: 3} package_version: 1.0.0 class: extension kind: complex-type url: http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-answerValueSetSource base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0