{description: The drug tier of a particular medication in a health plan. The base set are examples. Each plan may have its own controlled vocabulary., package_name: hl7.fhir.us.davinci, name: DrugTierVS, type: null, package_version: drug-formulary-2.0.1, class: unknown, kind: null, url: 'http://hl7.org/fhir/us/davinci-drug-formulary/ValueSet/DrugTierVS', version: 2.0.1}