What is the Quality Data Model (QDM)?

The Quality Data Model (QDM) is an information model that defines relationships between patients and clinical concepts in a standardized format to enable electronic quality performance measurement. The model is the current structure for electronically representing quality measure concepts for stakeholders involved in electronic quality measurement development and reporting. The QDM is currently being aligned with other relevant clinical decision support (CDS) standards.

The QDM provides the language that defines the criteria for clinical quality measurement. It allows the electronic definition of a clinical concept via its data elements and provides the vocabulary to relate them to each other. By relating attributes between data elements and using filtering functions, the QDM provides a method to construct complex clinical representations for electronic clinical quality measures. The QDM provides the foundation for the conceptualization and specification phases in the eCQM Measure Lifecycle.

Slice 1Created with Sketch. Data type Category Value Set Attribute Code System Codes Laboratory Test, Performed Laboratory Test High Density Lipoprotein result < 40mg/dL LOINC 14646-4 18263-4 2085-9

Category - A single clinical concept that is the highest level of definition for a QDM element e.g., Medication, Procedure, Condition/Diagnosis/Problem, Communication, Encounter. The QDM currently contains 19 categories.

Data Type - Provides context within a category e.g., in a ‘Medication’ category, ‘Medication, Active” and ‘Medication, Administered’ are particular data types.

Attribute - Provides specific detail within a data type. There are two types of attributes, data type specific attributes and data flow attributes.

  • Data type specific attributes - Provides specific detail on a data type e.g., Medication, Dispensed and Medication, Ordered contains information about dosage, route, strength, and duration of a medication, while a Medication allergy, contains information about the allergy type, allergy severity, etc.

  • Data flow attributes - Provides specific detail about the location of data represented by a QDM element e.g., Health Record Field indicates the location within an electronic record where the data should be found, Source indicates the originator of the quality data element (an individual or a device), and a Recorder, the individual or device that enters the data element into a health record field.

Participation in the QDM User Group

The QDM User Group is a group of volunteer members who use the QDM for measure development, measure implementation, alignment with related standards and more. View the QDM User Group Charter for more information about the group. If you are interested in participating in the User Group, please send an email to qdm@esacinc.com.

QDM 4.3 Resources

QDM Versions

Draft QDM 5.0 for use with Clinical Quality Language (CQL) is found on the CQL page.

Previous Versions of the QDM and Guidance Documents

Help and Feedback

For questions or comments on the QDM, please contact qdm@esacinc.com.

To submit an issues ticket, please visit the ONC JIRA site Web Site Disclaimers

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    Getting Started

    Q. Where is the eCQI Resource Center?


    Q. How do we sign up for the QDM measure development workgroups? How do I sign up for the upcoming QDM events?

    A. The CQM QDM is coordinated by a QDM User Group that responds to requests for additional clarification or content from measure developers and others submitting information to the ONC JIRA tracking system QDM section. Please visit the eCQI Resource Center QDM page for further information and to register for the QDM User Group.

    Q. How does a person get involved in the QDM project testing, developing measures in QDM?

    A. Measure developers use QDM to develop eCQMs in the Measure Authoring Tool (MAT). The QDM documentation provides guidance for how to use the information model to express eCQM content. Please visit the eCQI Resource Center QDM page to learn about QDM and to register for the QDM User Group.

    Q. Where do I post any questions or issues I may have with the QDM expression logic?

    A. You can create an account on the ONC JIRA tracking system at oncprojectracking.healthit.gov. Once you are logged in, click Projects from the top menu bar and chose “QDM Issue Tracker (QDM)” from the dropdown menu. Click “Create” and enter any necessary details of your question or issue. Alternatively, you can email your question to qdm@esacinc.com.

    Q. Is there a glossary of all the abbreviations for those of us that are novices?

    A. Many of the acronyms are found on the eCQI Resource Center Glossary of eCQI Terms. We will be updating and adding new terms relating to the QDM measure in the future. If you see acronyms that are not explained the Glossary, please send us a note at ecqi-resource-center@hhs.gov.

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    Quality Data Model (QDM)

    Q. What is the QDM?

    A. The QDM is an information model...

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Wednesday, January 18

  • 2:07pm EST
    Event Reminder: CANCELLED : Jan 18 2017 - 2:30pm Reminder: CANCELLED : Jan 18 2017 - 2:30pm The QDM User Group Webinar planned for January 18, 2017 has been cancelled due to a conflict with the HL7 WG Meeting in San Antonio. 

    Event Reminder: CANCELLED : Jan 18 2017 - 2:30pm

    Reminder: CANCELLED : Jan 18 2017 - 2:30pm

    The QDM User Group Webinar planned for January 18, 2017 has been cancelled due to a conflict with the HL7 WG Meeting in San Antonio.


Thursday, January 12

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Wednesday, December 21 2016