Health IT & Interoperability

C-CDAConsolidated Clinical Document Architecture

A standard format for clinical documents — such as a continuity-of-care document — exchanged between health systems.

Reviewed June 2026 by Enterprise Health

Key facts

  • Standard format for structured clinical documents (e.g., a CCD).
  • Carries problems, meds, allergies and results for transitions of care.
  • Required by ONC certification.

What it means

C-CDA defines structured clinical documents (problems, medications, allergies, results) used for transitions of care and patient access, and is required by ONC certification. An occupational-health record can consume a C-CDA from a hospital EHR or produce one for a referral, sharing context without rekeying.

Frequently asked

What is a C-CDA?

A Consolidated Clinical Document Architecture document — a standardized clinical summary (like a continuity-of-care document) containing problems, medications, allergies and results, used for care transitions and patient access.

How does C-CDA help occupational health?

An occupational-health record can consume a C-CDA from a hospital EHR or produce one for a referral, sharing clinical context without rekeying.

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