description: Attribute that identifies the refill number of a prescription. e.g. 0, 1, 2, etc. package_name: hl7.fhir.us.davinci derivation: constraint name: DispenseRefill type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/us/davinci-pdex/StructureDefinition/DispenseRefill'} index: 1 value: short: Refill number of this prescription choices: [valueQuantity] index: 3 valueQuantity: {type: Quantity, short: Refill number of this prescription, choiceOf: value, index: 4} package_version: pdex-1.0.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/us/davinci-pdex/StructureDefinition/DispenseRefill base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0