CQL Style Guide

The Clinical Quality Language (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 using CQL. The CQL Style Guide focuses on a set of common best practices that have been implemented across CQL-based eCQMs in CMS quality reporting programs. The CQL Style Guide also promotes the use of consistent language within the framework of 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.