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Technical Release Notes (TRNs)

The Technical Release Notes (TRNs) are resource files, which provide an overview of technical changes, e.g., logic and terminology, for each electronic clinical quality measure (eCQM) in the most recent eCQM Annual Update for CMS reporting/performance periods. Each grouping, e.g., Eligible Clinician, Hybrid Measures, has their own TRN file.

Last Updated: Mar 17, 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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