description: A code classifying the person's sex assigned at birth. This extension aligns with LOINC 76689-9 (Sex assigned at birth).
package_name: hl7.fhir.us.core
derivation: constraint
name: USCoreBirthSexExtension
type: Extension
elements:
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-birthsex'}
    index: 0
  value:
    choices: [valueCode]
    index: 2
  valueCode: {type: code, choiceOf: value, index: 3}
package_version: 9.0.0-ballot
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/core/StructureDefinition/us-core-birthsex
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 9.0.0-ballot
required: [valueCode, value]