description: Reference to the formulary this item belongs to.
package_name: hl7.fhir.us.davinci
derivation: constraint
name: FormularyReference
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/davinci-drug-formulary/StructureDefinition/usdf-FormularyReference-extension'}
    index: 1
  value:
    choices: [valueReference]
    index: 3
  valueReference:
    type: Reference
    choiceOf: value
    refers: ['http://hl7.org/fhir/us/davinci-drug-formulary/StructureDefinition/usdf-Formulary']
    index: 4
package_version: drug-formulary-2.1.0
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/davinci-drug-formulary/StructureDefinition/usdf-FormularyReference-extension
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 2.1.0
required: [valueReference, value]