Guide for Reading eCQMs Category Implementation Who Uses Tool Eligible Hospital and Critical Access Hospital Eligible Professional and Eligible Clinician Health IT Developer/Vendor Implementers The Guide for Reading eCQMs is a resource to assist stakeholders in interpreting and understanding eCQMs. The guide provides information on eCQMs such as file naming conventions, understanding an eCQM human-readable rendition, value sets, QDM data criteria, and more.