Consolidated Clinical Document Architecture

The HL7 Consolidated Clinical Document Architecture (C-CDA) is an XML-based markup standard which provides a library of CDA formatted documents. Clinical documents using the C-CDA standards are exchanged billions of times annually in the United States.^[1][2][3] All certified Electronic health records in the United States are required to export medical data using the C-CDA standard.^[4] While the standard was developed primarily for the United States as the C-CDA incorporates references to terminologies and value set required by US regulation, it has also been used internationally.