description: The prefix portion (e.g. voorvoegsel) of the family name that is derived from the person's own surname, as distinguished from any portion that is derived from the surname of the person's partner or spouse. package_name: hl7.fhir.uv.extensions derivation: constraint name: OwnPrefix type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/humanname-own-prefix'} index: 1 value: choices: [valueString] index: 3 valueString: {type: string, choiceOf: value, index: 4} package_version: 5.3.0-ballot extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/humanname-own-prefix base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.3.0-ballot required: [valueString, value]