description: Used to indicate whether an instance relates to the father or the mother. package_name: hl7.fhir.us.bfdr derivation: constraint name: ExtensionRole type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/us/bfdr/StructureDefinition/Extension-role'} index: 1 value: short: Value set used to indicate father or mother. choices: [valueCodeableConcept] index: 3 valueCodeableConcept: {type: CodeableConcept, short: Value set used to indicate father or mother., choiceOf: value, index: 4} package_version: 2.0.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/us/bfdr/StructureDefinition/Extension-role base: http://hl7.org/fhir/StructureDefinition/Extension version: 2.0.0 required: [value, valueCodeableConcept]