{ "description": "Accesses the DrugTier ID of a FormularyDrug", "_filename": "example/SearchParameter-DrugTier.json", "package_name": "hl7.fhir.us.davinci", "date": "2020-01-21T20:56:50+00:00", "expression": "MedicationKnowledge.extension.where(url='http://hl7.org/fhir/us/Davinci-drug-formulary/StructureDefinition/usdf-DrugTierID-extension').value", "publisher": null, "name": "DrugTier", "type": "token", "experimental": null, "resourceType": "SearchParameter", "title": null, "package_version": "drug-formulary-1.0.0", "status": "active", "id": "a5c25b17-657c-4ced-a7a4-f6d9041084f1", "kind": null, "url": "http://hl7.org/fhir/us/Davinci-drug-formulary/SearchParameter/DrugTier", "code": "DrugTier", "comparator": [ "eq" ], "base": [ "MedicationKnowledge" ], "version": "1.0.0" }