description: This profile of the Ratio data type constraints the Ratio (MyHealth@EU) profile defining a core value set for UCUM. The Ratio (MyHealth@EU) imposes the usage of the UCUM as the code system for units and allows expressing uncertainty of measurement. package_name: myhealth.eu.fhir.core derivation: constraint name: RatioMyHealth type: Ratio elements: extension: type: Extension url: http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty|5.2.0 index: 0 slicing: slices: uncertainty: match: {} schema: {type: Extension, url: 'http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty|5.2.0', index: 0} min: 0 max: 1 uncertaintyType: match: {} schema: {type: Extension, url: 'http://hl7.org/fhir/StructureDefinition/iso21090-uncertaintyType|5.2.0', index: 1} min: 0 max: 1 numerator: {type: Quantity, short: A measured amount using UCUM, mustSupport: true, index: 2} denominator: {type: Quantity, short: A measured amount using UCUM, mustSupport: true, index: 3} package_version: 1.0.0 extensions: uncertainty: {url: 'http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty|5.2.0', min: 0, max: 1, type: Extension, index: 0} uncertaintyType: {url: 'http://hl7.org/fhir/StructureDefinition/iso21090-uncertaintyType|5.2.0', min: 0, max: 1, type: Extension, index: 1} class: complex-type kind: complex-type url: http://fhir.ehdsi.eu/core/StructureDefinition/Ratio-myhealth base: http://hl7.org/fhir/StructureDefinition/Ratio version: 1.0.0