USCDI: This page maps the US Core profiles to the (USCDI) data classes and data elements.Guidance: The Guidance pages provides guidance in using the profiles and transactions defined in this guide.Must Support: This page defines the expectations for mandatory and must support elements in the US Core Profiles.General Requirements: This page defines requirements common to all actors and profiles used in this guide including how CapabilityStatements are used to claim conformance.Conformance: These pages describe the set of rules to claim conformance to this guide.Home: The home page provides the introduction and background for US Core.This Guide is divided into several pages which are listed at the top of each page in the menu bar. US Core descended directly from the Argonaut guide to support FHIR Version STU3 and eventually FHIR R4 and The ONC U.S. The Argonaut Data Query Implementation Guide superseded DAF and documented security and authorization and the querying of the 2015 Edition Common Clinical Data Set (CCDS) and static documents. The US Core requirements were originally developed, balloted, and published in FHIR DSTU2 as part of the Office of the National Coordinator for Health Information Technology (ONC) sponsored Data Access Framework (DAF) project. Under the guidance of HL7 and the HL7 US Realm Steering Committee, the content will expand in future versions to meet the needs specific to the US Realm. This Approach is outlined in the Future of US Core page. Core Data for Interoperability (USCDI) v2 and requests from the US Realm FHIR community. This release is the first of yearly US Core updates to reflect changes to U.S. This guide and the US Core profiles have become the foundation for US Realm FHIR implementation guides. US Core has benefitted from testing and guidance by the Argonaut Project Team to provide additional content and guidance specific to Data Query Access for purpose of ONC Certification testing. Profile Support + Interaction Support: Systems may support both the US Core Profile content structure and the RESTful interactions defined for a resource.įor a detailed description between these different usages of US Core, see the Conformance Requirements page.Profile Only Support: Systems may support only the US Core Profiles to represent clinical information.There are two different ways to implement US Core: By establishing the “floor” of standards to promote interoperability and adoption through common implementation, it allows for further standards development evolution for specific uses cases. It also defines the minimum set of FHIR RESTful interactions for each of the US Core Profiles to access patient data. The US Core Implementation Guide is based on FHIR Version R4 and defines the minimum set of constraints on the FHIR resources to create the US Core Profiles. Key updates and detailed changes between this and prior versions are available in the US Core Change Log Introduction

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