description: A boolean indicating whether the coverage plan imposes a step therapy requirement on this drug meaning another drug may need to be tried beforehand.
package_name: hl7.fhir.us.davinci
derivation: constraint
name: StepTherapyLimit
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/davinci-drug-formulary/StructureDefinition/usdf-StepTherapyLimit-extension'}
    index: 1
  value:
    choices: [valueBoolean]
    index: 3
  valueBoolean: {type: boolean, 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-StepTherapyLimit-extension
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 2.0.1
required: [value, valueBoolean]