CQMCommonQDM Library

The CQMCommonQDM Library (formerly known as the Global Common Library) is a shared, standardized library of Clinical Quality Language (CQL) expressions built on the Quality Data Model (QDM).

It is used by electronic clinical quality measure (eCQM) developers to:

• Reuse common logic across multiple measures
• Promote consistency and alignment in measure specifications
• Reduce duplication of code and logic
• Improve efficiency during measure development and maintenance

Instead of each eCQM defining similar logic independently), the CQMCommonQDM Library provides centralized, reusable CQL components that can be referenced across measures.

The CQMCommonQDM Library specifications can be found within the eCQMs section in the eCQM Resources tab for the specific program (e.g., Eligible Clinician eCQMs).