description: The period for which this item is available on the formulary. Drugs may appear on a formulary, but not considered \"active\" for the current year.
package_name: hl7.fhir.us.davinci
derivation: constraint
name: AvailabilityPeriod
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/davinci-drug-formulary/StructureDefinition/usdf-AvailabilityPeriod-extension'}
    index: 1
  value:
    mustSupport: true
    choices: [valuePeriod]
    index: 3
  valuePeriod: {type: Period, mustSupport: true, choiceOf: value, index: 4}
package_version: drug-formulary-2.0.1
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/davinci-drug-formulary/StructureDefinition/usdf-AvailabilityPeriod-extension
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 2.0.1
required: [valuePeriod, value]