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QDM - Quality Data Model

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Current Version of the QDM in Use

The most recent version of the QDM is QDM v5.6. It was published January 2021 and lists all changes from QDM v5.5 Guidance Update in section 7.1 and highlights all data model changes throughout the document with red text.

Resources and Support

For additional information, refer to the eCQI Tools and Resources Library to explore available tools and resources supporting eCQM development, implementation, and use.

Visit the QDM FAQs page to review common questions and answers on QDM.

Find QDM Known Issues on the Clinical Quality Language (CQL) Formatting and Usage Wiki.

Last Updated: Mar 25, 2026

We want your feedback

For technical questions about eCQMs, please log in to the ONC Project Tracking System, specifically the eCQM Issue Tracker.

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