QDM-based CQL Style Guide

The Quality Data Model (QDM)-based CQL Style Guide provides standardized expressions of electronic clinical quality measure (eCQM) concepts across eCQMs and defines a uniform “look and feel” to eCQM logic. The QDM-based CQL Style Guide focuses on a set of common best practices that have been implemented across QDM-based eCQMs in CMS quality reporting programs. The QDM-based CQL Style Guide also promotes the use of consistent language within the framework of Clinical Quality Language (CQL), including libraries, aliases, definitions, and functions, and provides guidance on other conventions, such as operator precedence. eCQM stewards or developers who are developing or specifying eCQMs for potential inclusion in CMS reporting programs should follow these best practices.