This page is part of the US Core (v2.1.0: STU3 Ballot 1) based on FHIR R4. The current version which supercedes this version is 5.0.1. For a full list of available versions, see the Directory of published versions 
Profiles and Extensions
Profiles
The following Profiles and have been defined for this implementation guide.
- In addition US Core uses the Vital Signs Profile from the FHIR Specification. The expanded US Core Vital Signs Quick Start section provides guidance on vital signs search.
Extensions
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.
