Extension 
url 
value[x] Binding: ?? (required): A version specific list of the data types defined by the FHIR specification for use as an element type (any of the FHIR defined data types).
Documentation for this formatThis is the set of resources that conform to either of the profiles StructureDefinition FHIR Type (http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type) and StructureDefinition FHIR Type (http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type). 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..1 | Base FHIR type (when a special property) | ||
| url | 1..1 | uri | identifies the meaning of the extension | |
| value[x] | 1..1 | url | Value of extension Binding: ?? (required): A version specific list of the data types defined by the FHIR specification for use as an element type (any of the FHIR defined data types). | |
| Documentation for this format | ||||