Clinical Quality Language Specification
2.0.0-ballot - R2 STU 1 (Ballot)

Clinical Quality Language Specification, published by Clinical Decision Support WG. This guide is not an authorized publication; it is the continuous build for version 2.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/cql/ and changes regularly. See the Directory of published versions

## Title

Page standards status: Normative | Maturity Level: N

Clinical Quality Language (CQL)

HL7 Standard: Clinical Quality Language Specification, Release 2 Trial-Use (CQL 2.0.0-ballot)

August 2025 Publication

HL7 Trial-Use Specification

Sponsored by:

Clinical Decision Support and Clinical Quality Information Work Groups

in collaboration with the Health and Human Services Standards and Interoperability Framework Clinical Quality Framework Initiative ____________________________________________

Copyright © 2014+ Health Level Seven International ® ALL RIGHTS RESERVED. The reproduction of this material in any form is strictly forbidden without the written permission of the publisher. HL7 and Health Level Seven are registered trademarks of Health Level Seven International. Reg. U.S. Pat & TM Off.

Use of this material is governed by HL7's IP Compliance Policy.

Identifying Information for Specification:

Specification Name and Release Number: HL7 Standard: Clinical Quality Language Specification, Release 2 - STU Ballot (CQL 2.0.0-ballot)

Realm: Universal

Ballot Level: Trial-Use

Ballot Cycle: September 2025

Specification Date: August 1st 2025

Co-Chair (CDS): | Guilherme Del Fiol, MD, PhD University of Utah Health Care guilherme.delfiol@utah.edu
Co-Chair (CDS): | Robert Jenders, MD, MS jenders@ucla.edu
Co-Chair (CDS): | Kensaku Kawamoto, MD, PhD University of Utah Health Care kensaku.kawamoto@utah.edu
Co-Chair (CDS): | Howard Strasberg Walters Kluwer Health howard.strasberg@wolterskluwer.com
Co-Chair (CQI): | Patricia Craig The Joint Commission pcraig@jointcommission.org
Co-Chair (CQI): | Floyd Eisenberg iParsimony LLC FEisenberg@iParsimony.com
Co-Chair (CQI): | Chris Millet chris@thelazycompany.com
Co-Chair (CQI): | Walter Suarez, MD, MPH Kaiser Permanente walter.q.suarez@kp.org
Co-Chair (CQI): | Kanwarpreet Sethi Lantana Consulting Group kp.sethi@lantanagroup.com
Co-Chair (ITS): | Paul Knapp Knapp Consulting Inc. pknapp@pknapp.com
Co-Chair (ITS): | Dale Nelson Lantana Consulting Group dale.nelson@squaretrends.com
Co-Chair (ITS): | Andy Stechishin HL7 Canada andy.stechishin@gmail.com
Co-Author: | Bryn Rhodes Database Consulting Group bryn@databaseconsultinggroup.com
Co-Author: | Chris Moesel The MITRE Corporation cmoesel@mitre.org
Co-Author: | Marc Hadley The MITRE Corporation mhadley@mitre.org
Co-Author: | Mark Kramer The MITRE Corporation mkramer@mitre.org
Co-Author: | Robert Dingwell The MITRE Corporation bobd@mitre.org
Co-Editor: | Aziz Boxwala, PhD Meliorix aziz.boxwala@meliorix.com

Acknowledgments

The authors wish to recognize the S&I Framework Clinical Quality Framework Initiative Work Group and the HL7 Clinical Decision Support, Clinical Quality Improvement, and Implementable Technology Specifications Work Groups for their contributions to this document.

Copyrights

This material includes SNOMED Clinical Terms ® (SNOMED CT®), which are used by permission of the International Health Terminology Standards Development Organization (IHTSDO). All rights reserved. SNOMED CT was originally created by The College of American Pathologists. "SNOMED ®" and "SNOMED CT ®" are registered trademarks of the IHTSDO.

This material contains content from LOINC® (http://loinc.org). The LOINC table, LOINC codes, and LOINC panels and forms file are copyright (c) 1995+, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and available at no cost under the license at http://loinc.org/terms-of-use.

This material contains content from the Unified Code for Units of Measure (UCUM) (http://unitsofmeasure.org). The UCUM specification is copyright (c) 1999+, Regenstrief Institute, Inc. and available at no cost under the license at http://unitsofmeasure.org/trac/wiki/TermsOfUse.

This material contains quality measure content developed by the National Committee for Quality Assurance (NCQA). The measure content is copyright (c) 2008+ National Committee for Quality Assurance and used in accordance with the NCQA license terms for non-commercial use.