CQL - Clinical Quality Language - Versions

The CQL standards are located on the HL7 Website: CQL Specification.
The latest version of CQL is v1.5.3: Current Official Published Version - Normative Release 1 (mixed Normative/Trial-use content), based on Fast Healthcare Interoperability Resources® R4.
Find the QDM versions for use with Clinical Quality Language (CQL) on the QDM page.
See the QDM-based CQL Style Guide (v9) for calendar year 2026 reporting.

CQL Style Guide (v8) aligns with the CQL expression style of eCQMs using CQL for calendar year 2025 reporting.
CQL Style Guide (v7) aligns with the CQL expression style of eCQMs using CQL for calendar year 2024 reporting.
CQL Style Guide (v6) aligns with the CQL expression style of eCQMs using CQL for calendar year 2023 reporting.
CQL Style Guide (v5) aligns with the CQL expression style of eCQMs using CQL for calendar year 2022 reporting.
CQL Style Guide (v4) aligns with the CQL expression style of eCQMs using CQL for calendar year 2021 reporting.
CQL Style Guide (v3) aligns with the CQL expression style of eCQMs using CQL for calendar year 2020 reporting.
CQL Style Guide (v2) aligns with the CQL expression style of eCQMs using CQL for calendar year 2019 reporting.

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