description: The portion of the family name that is derived from the person's mother. package_name: hl7.fhir.core derivation: constraint name: mothers-family type: Extension elements: extension: {index: 0} url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/humanname-mothers-family'} index: 1 valueString: {type: string, index: 2} package_version: 3.2.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/humanname-mothers-family base: http://hl7.org/fhir/StructureDefinition/Extension version: null