description: null package_name: telus.dw.emr.extract derivation: constraint name: DwObservationDrugUseFrequency type: Observation elements: referenceRange: {index: 22} meta: index: 1 elements: lastUpdated: {index: 2} required: [lastUpdated] specimen: {index: 20} valueQuantity: {type: Quantity, mustSupport: true, choiceOf: value, index: 16} value: mustSupport: true choices: [valueQuantity, valueString] index: 15 valueString: {type: string, mustSupport: true, choiceOf: value, index: 17} note: {mustSupport: true, index: 18} status: {mustSupport: true, index: 5} effective: mustSupport: true choices: [] index: 13 id: {mustSupport: true, index: 0} code: mustSupport: true index: 6 elements: coding: mustSupport: false index: 7 elements: system: {mustSupport: false, index: 8} code: {mustSupport: false, index: 9} text: {mustSupport: true, index: 10} identifier: {mustSupport: true, index: 4} bodySite: {index: 19} device: {index: 21} subject: type: Reference mustSupport: true refers: ['https://www.telus.com/health/fhir/dwemrextract/StructureDefinition/DwPatient'] index: 11 text: {mustSupport: true, index: 3} package_version: 1.0.0 class: profile kind: resource url: https://www.telus.com/health/fhir/dwemrextract/StructureDefinition/DwObservationDrugUseFrequency base: http://hl7.org/fhir/StructureDefinition/Observation version: null required: [id, subject]