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What is CQL?

Clinical Quality Language (CQL) is a Health Level Seven International® (HL7®) standard language designed to be easy for people to read while also supporting electronic processing. It allows measure developers to write quality measure logic in a format that is both human-readable and computer-readable. Developers with access to the Measure Authoring Development Integrated Environment (MADiE) can use CQL to create and maintain eCQMs and dQMs.

Last Updated: Aug 26, 2026

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

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