US Core IG

The US Core Implementation Guide (IG) is a Fast Healthcare Interoperability Resources® (FHIR®) IG that defines a standard set of data elements and structures to enable consistent exchange of health information across U.S. healthcare systems. It provides a baseline for interoperability, ensuring that electronic health records (EHRs) and other health information technology (IT) systems can communicate essential clinical data reliably. This guide incorporates United states Core Data for Interoperability’s (USCDI) set of health data classes and elements with USCDI specifying the content (what data) and US Core defining the structure (how data is represented in FHIR).