description: Provides a computable unit of measure associated with numeric questions to support subsequent computation on responses. package_name: hl7.fhir.core derivation: constraint name: unit type: Extension elements: extension: {index: 0} url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/questionnaire-unit'} index: 1 valueCoding: {type: Coding, index: 2} package_version: 3.2.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/questionnaire-unit base: http://hl7.org/fhir/StructureDefinition/Extension version: null