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. All certified Electronic health records in the United States are required to export medical data using the C-CDA standard. 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. Content There are 11 document types in the C-CDA standard Care Plan Consultation Note Continuity of Care Document Diagnostic Imaging Report Discharge Summary History and Physical Operative Note Procedure Note Progress Note Transfer Summary Unstructured Document References Further reading External links Standards for electronic health records Computer file formats Industry-specific XML-based standards