{description: Accesses the DrugTier ID of a FormularyDrug, package_name: hl7.fhir.us.davinci-drug-formulary, name: DrugTier, type: token, package_version: 0.1.0, class: unknown, kind: null, url: 'http://hl7.org/fhir/us/Davinci-drug-formulary/SearchParameter/DrugTier', version: 0.1.0}