US Core

The baseline US-realm FHIR profiles implementing USCDI, ONC interoperability certification.

Definition

US Core constrains base FHIR resources (Patient, Observation, Condition, MedicationRequest, etc.) into US-specific profiles and marks key elements as Must Support, obliging servers to populate them and clients to process them. It is the FHIR realization of the ONC U.S. Core Data for Interoperability (USCDI), and underpins the ONC certified API and (g)(10) requirements.

Origin

Published by HL7 under the US Realm Steering Committee as the US Core implementation guide (e.g. STU 6/7/8 on FHIR R4); it operationalizes the ONC USCDI data standard.

Example in context

GET /Patient?_profile=http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient → a Bundle of US Core Patient resources with Must Support identifiers and US Core Race/Ethnicity extensions.

Related terms

• SMART App Launch — the authorization layer typically paired with US Core data.