description: Word or words used in an information retrieval system to indicate the content of the value set. (deprecated) package_name: rs/hl7.fhir.r5.core derivation: constraint name: CSKeyWord type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/codesystem-keyWord'} type: uri index: 1 value: choices: [valueString] index: 3 valueString: {type: string, choiceOf: value, index: 4} package_version: 5.0.0-snapshot3 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/codesystem-keyWord base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.0.0-snapshot3 required: [value, valueString]