The Consolidated Clinical Document Architecture (C-CDA, or CCDA), is based on components of two standard formats that were required for EHRs in previous certification situations:

In an effort to reduce ambiguity and eliminate conflicts in documentation, Health Level 7 (HL7) created CCDA to serve as a single implementation guide.


The 2014 Edition Certification Program for HIT criteria (MU2 regs) specify the use of HL7’s C-CDA to capture data requirements in a specific summary type.

All of the summary types share a common data set that the ONC has named "The Common MU Data Set." These data elements are present in all CCDA Summary types, and are listed below.

Certification Criterion Description Summary Type Notes
Transition of Care Electronically create a transition of care/referral summary. Transition of Care/Referral Summary This summary type is used as a Summary of Care document.
Data Portability Electronically create a set of export summaries for all patients in EHR technology. Export Summary This summary type allows a site to, en-masse, create Export Summary CCDA documents. This simplifies the job of migrating volumes of patient data to a new system.
View/Download/Transmit Electronically view, download, or transmit an ambulatory summary. Ambulatory Summary Summary of the patient's chart, including historical information.
Clinical Summary Create an encounter summary for a patient. Clinical Summary (also called Clinical Visit Summary in Prime Suite) "Snapshot" summary of the care provided to a patient during an encounter, and also including active medications and problems.


Each document type has unique attributes, specific to the use case for the CCDA document.

For details on each, click the link for the document type.