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.core derivation: constraint name: Voorvoegsel derived from person's own surname type: Extension elements: extension: index: 0 slicing: slices: extension: match: {} schema: {index: 0} max: 0 url: type: uri 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: 1.8.0 extensions: extension: {url: null, max: 0, index: 0} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/humanname-own-prefix base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [valueString, value]