description: Gender at the time of birth. The gender at birth has lasting consequences on clinical and medical level. package_name: hl7.fhir.be.core derivation: constraint name: BeExtGenderAtBirth type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://www.ehealth.fgov.be/standards/fhir/core/StructureDefinition/be-ext-gender-at-birth'} index: 1 value: choices: [valueCodeableConcept] index: 3 valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 4} package_version: 2.1.2 extensions: {} class: extension kind: complex-type url: https://www.ehealth.fgov.be/standards/fhir/core/StructureDefinition/be-ext-gender-at-birth base: http://hl7.org/fhir/StructureDefinition/Extension version: 2.1.2