This page is part of the US Core (v6.1.0: STU6 Update) based on FHIR R4. This is the current published version. For a full list of available versions, see the Directory of published versions. Page versions: STU6.1 STU6 STU5 STU4
The following profiles and have been defined for this implementation guide.
The following Extensions have been defined as part of the US Core implementation Guide. A registry of standard extensions can be found in the FHIR specification and additional extensions may be registered on the HL7 FHIR registry at http://hl7.org/fhir/registry.