description: Base StructureDefinition for Quantity Type package_name: hl7.fhir.r3.core derivation: specialization name: Quantity type: Quantity elements: value: {short: Numerical value (with implicit precision), type: decimal, isSummary: true, index: 0} comparator: {isModifier: true, short: < | <= | >= | > - how to understand the value, type: code, meaningWhenMissing: 'If there is no comparator, then there is no modification of the value', isSummary: true, index: 1} unit: {short: Unit representation, type: string, isSummary: true, index: 2} system: {short: System that defines coded unit form, type: uri, isSummary: true, index: 3} code: {short: Coded form of the unit, type: code, isSummary: true, index: 4} package_version: 3.0.2 class: complex-type kind: complex-type url: http://hl7.org/fhir/StructureDefinition/Quantity base: http://hl7.org/fhir/StructureDefinition/Element version: null