For specific questions and guidance related to the measure logic and content of the eCQM value sets, please submit a request to the ONC CQM Issue Tracker at

Although NLM hosts the repository for value sets (VSAC), including value sets specified in eCQMs, and NLM is the central coordinating body for clinical standard terminologies (SNOMED CT, RxNorm, LOINC), NLM does not create the rules, measures, guidance or value sets for the measures.

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