description: Started pregnancy week in which the medication was taken package_name: il.fhir.r4.dgmc derivation: constraint name: StartedPregnancyWeek type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://fhir.dgmc.health.gov.il/StructureDefinition/ext-medication-started-pregnancy-week'} index: 1 value: choices: [valueQuantity] index: 3 valueQuantity: {type: Quantity, choiceOf: value, index: 4} value[x]: elements: unit: pattern: {type: String, value: week} index: 5 system: pattern: {type: Uri, value: 'http://unitsofmeasure.org'} index: 6 code: pattern: {type: Code, value: wk} index: 7 package_version: 0.10.0 extensions: {} class: extension kind: complex-type url: http://fhir.dgmc.health.gov.il/StructureDefinition/ext-medication-started-pregnancy-week base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.10.0