Extension 
url 
value[x] Binding: ?? (extensible)
Documentation for this formatThis is the set of resources that conform to either of the profiles Drug Tier ID (http://hl7.org/fhir/us/davinci-drug-formulary/StructureDefinition/usdf-DrugTierID-extension) and Drug Tier ID (http://hl7.org/fhir/us/davinci-drug-formulary/StructureDefinition/usdf-DrugTierID-extension). E.g. what you have to deal with if you get resources conforming to one of them
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension | 0..* | Drug Tier ID | ||
| url | 1..1 | uri | identifies the meaning of the extension | |
| value[x] | 1..1 | CodeableConcept | Value of extension Binding: ?? (extensible) | |
| Documentation for this format | ||||