We are pleased to announce that the C-CDA R2.1 2022-08-10 Value Set Program Release is now available in the Value Set Authority Center (VSAC):

This release contains 144 C-CDA value sets. There is one new value set in this release compared to last year's release:

Value Set Name	Value Set OID
Mental Status Observation	2.16.840.1.113762.1.4.1240.1

For a full summary of updates, please see Summary of Updates for the C-CDA R2.1 2022-08-10 Value Set Program Release.

There are several ways you can access the C-CDA value sets:

VSAC Welcome Page https://vsac.nlm.nih.gov/welcome :

• The Search button of the HL7 C-CDA Value Sets program block leads you to the VSAC Search Value Sets web browser, presorted by this HL7 CCDA release. The Download link leads you to the C-CDA Value Sets section of the Download tab and supplies prepackaged downloadable files.

VSAC Download Tab https://vsac.nlm.nih.gov/download/ccda?rel=20220810 :

• From the download tab, you can download:
• Excel, pipe-delimited text files, and XML files of the C-CDA value sets;
• Code System Versions Currently in C-CDA R2.1 Value Sets;
• a list of C-CDA R2.1 Value Sets Available in VSAC;
• and, a list of C-CDA R2.1 Value Sets Unavailable in VSAC.
• The published downloadable C-CDA R2.1 2022-08-10 release excludes 24 C-CDA value sets for which VSAC does not have the required supporting code systems.

VSAC Search Value Sets Tab https://vsac.nlm.nih.gov/valueset/expansions?pr=ccda :

• In the VSAC web browser, you can search, sort, filter and view details for all or individual C-CDA value sets; use the Export Search Results button to download a catalog of C-CDA value set expansions; increase the page view up to 300 rows, and use the checkboxes to download all C-CDA value set expansions as Excel, XML, or Text files.

VSAC SVS API https://www.nlm.nih.gov/vsac/support/usingvsac/vsacsvsapiv2.html :

• Given a C-CDA value set identifier (OID) that you can obtain by any of the above methods, using an SVS API call, such as:
• [https://vsac.nlm.nih.gov/vsac/svs/RetrieveMultipleValueSets?id=2.16.840.1.113883.1.11.16866&release=C-CDA R2.1 2022-08-10&ticket=your-service-ticket]

• For additional information on API authentication and usage, see the API documentation. https://www.nlm.nih.gov/vsac/support/usingvsac/vsacsvsapiv2.html

Please send any questions or feedback regarding VSAC functionality to: NLM Customer Support at https://support.nlm.nih.gov/.

Take care,

Latasha

Latasha Estrada, MPH | (she/her)

Research Health Informaticist

Center for Health Informatics and Evidence Synthesis (CHIES),

Translational Health Sciences Division (THSD) | www.rti.org/healthit

RTI International | lestrada@rti.org | Eastern Time Zone