Now Available: Quality Data Model (QDM) v5.3 Annotated Standard

September 6, 2017 - 10:40am

The Centers for Medicare & Medicaid Services has released an annotated version of the Quality Data Model (QDM) standard, Version 5.3, for use with Clinical Quality Language (CQL). The standard has been updated to add guidance for using QDM with CQL. Support for these features and modifications, pending outcomes of CQL testing, is expected to be implemented in the production version of the Measure Authoring Tool (MAT) with an anticipated release in Fall 2017 (version 5.4).

The QDM v5.3 Annotated standard contains the following changes from the QDM v5.3:

  • Added Relevant Period to Medication, Order and Medication, Dispensed
  • Removed Active dateTime from Medication, Order
  • Changed QDM attributes with cardinality greater than 1 to plural (changes attributes diagnosis to diagnoses, component to components, and facility location to facility locations for Encounter, Performed)
  • Added description of how QDM 5.3 data elements are expressed in tooling and in the HQMF and the CQL logic
  • Added explanation for new timing attributes – periods
  • Added explanation for new cardinality specification for QDM attributes
  • Added explanations for special cases – use of components, specifying results with value sets, and considerations for cumulative medication duration
  • Added clarifications for attributes relatedTo, Target Outcome, Result,  Facility Locations, Location Period, and Code
  • Added id attribute to all datatypes to allow expression of specific instances for any QDM data element in the CQL logic

There are no changes to the QDM v5.3, which represents a significant change from prior production versions as it no longer contains any logic expressions. Previously published versions of the QDM (through version 4.3) included the data model and logic required to compare one data element to another. Beginning with the QDM v5.0 Draft for use with CQL testing, the QDM includes only the data model, whereas this and future versions require the use of CQL as a separate method for expressing logic.

QDM will continue to evolve based on stakeholder input and feedback from the QDM User Group.

For More Information

You can find current and past versions of the QDM, QDM User Group meeting information, and CQL resources on the eCQI Resource Center

QDM - Quality Data Model

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Last Updated: September 6, 2017