HEDIS Measures and Technical Resources

• Upcoming Changes to HEDIS Volume 2 MY 2026 Measure Format

Vol. 1: Narrative

Overview of the HEDIS measurement set and how the data are used.

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• HEDIS MY 2025 Summary of Changes (Posted August 1, 2024)
• HEDIS MY 2025 Measure Descriptions (Posted August 1, 2024)

Vol. 2: Technical Specifications for Health Plans

HEDIS nonsurvey measures for organizations; instructions on data collection for
each measure; general guidelines for calculations and sampling.

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• HEDIS MY 2025: What’s New, What’s Changed, What’s Retired
• Technical Specifications Update Announcement (Posted March 31,
  2025)
• HEDIS MY 2025 Audit Timeline (Posted March 31, 2025)
• HEDIS MY 2025 Risk Adjustment Tables (Posted March 31, 2025)
  Note: The Risk Adjustment Tables are available for free order in the NCQA Store. Once ordered, the Risk Adjustment Tables will be made available in the “My Downloads” tab on My NCQA.
• HEDIS MY 2025 Medication List Directory (NDC codes) (Posted March 31, 2025)
  Note: The Medication List Directory is available for free order in the NCQA Store. Once ordered, the Medication List Directory will be made available in the “My Downloads” tab on My NCQA.
• HEDIS MY 2025 Public Reporting Memo (Anticipated Release Date:
  October 1, 2025)
• HEDIS MY 2025 Measure Trending Determinations (anticipated release
  date: Summer 2025)
• HEDIS FAQs

HEDIS Measures Included in the Quality Rating System (QRS)

Quality Rating System Measure Technical Specifications are unique to the issuers
offering plans on the Exchange and participating in the CMS Quality Rating
System (QRS).

• MY 2025 HEDIS for the Quality Rating System Technical Specifications (posted March 31, 2025)
• MY 2025 HEDIS for the Quality Rating System Value Set Directory (posted March 31, 2025)
• MY 2025 HEDIS for the Quality Rating System Random Number (RAND) Table (anticipated release date: October 31, 2025)
• HEDIS for the Quality Rating System FAQs

Vol. 3: Specifications for Survey Measures

HEDIS survey measures and standardized surveys from the Consumer Assessment of
Healthcare Providers and Systems (CAHPS^®) program.

• Order this publication (Anticipated Release Date: September 2025)
• CAHPS 5.1H Survey
• Survey Vendor Certification Program
• MY 2024 Validated Member-Level File Layout (Anticipated Release
  Date: January 2026)

Vol. 5: HEDIS Compliance Audit™: Standards, Policies and Procedures

The approved method for auditing the HEDIS production process, including an
information systems capabilities assessment, an evaluation of compliance with
HEDIS specifications and standards that Certified HEDIS Compliance Auditors must
use when conducting a HEDIS audit.

• Order this publication (Anticipated Release Date: August 2025)
• HEDIS Compliance Audit
• Specification Updates (If needed, will be released in December
  2025)

Vol. 6: The Medicare Health Outcomes Survey Manual

Technical specifications for the Health Outcomes Survey (HOS).

• Order this publication (Anticipated Release Date: May 2026)
• Health Outcomes Survey

HEDIS Technical Specifications for Long-Term Services and Support Measures

The technical specifications for organizations providing Medicaid long-term
services and supports (LTSS).

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• MY 2025 LTSS Technical Specifications Update (Posted March 31,
  2025)
• MY 2025 HEDIS LTSS Random Number (RAND) Table (anticipated release date: October 2025)
• Long-Term Services and Supports Programs

Vol. 1: Narrative

Overview of the HEDIS measurement set and how the data are used.

• Order this publication
• HEDIS MY 2024 Summary of Changes
• HEDIS MY 2024 Measure Descriptions (Updated December 4, 2023)

Vol. 2: Technical Specifications for Health Plans

HEDIS nonsurvey measures for organizations; instructions on data collection for each measure; general guidelines for calculations and sampling.

• Order this publication
• Technical Specifications Update (Posted April 1, 2024)
• HEDIS MY 2024 Audit Timeline (Updated August 29, 2024)
• HEDIS MY 2024 Risk Adjustment Tables (Posted April 1, 2024)
  Note: The Risk Adjustment Tables are available for free order in the NCQA Store. Once ordered, the Risk Adjustment Tables will be available in the “My Downloads” tab on My NCQA.”
• HEDIS MY 2024 Medication List Directory (NDC codes) (Updated on January 15, 2025)
  Note: The Medication List Directory is available for free order in the NCQA Store. Once ordered, the Medication List Directory will be available in the “My Downloads” tab on My NCQA.”
• HEDIS MY 2024 Public Reporting Memo (Posted October 1, 2024)
• HEDIS MY 2024 Measure Trending Determinations (Updated February 10, 2025)
• HEDIS Electronic Clinical Data System (ECDS)
• HEDIS FAQs
• HEDIS MY 2024 Technical Release Notes (Posted October 27, 2023)
• HEDIS MY 2024 Technical Update Release Notes (Posted June 1. 2024)

HEDIS Measures Included in the Quality Rating System (QRS)

Quality Rating System Measure Technical Specifications are unique to the issuers offering plans on the Exchange and participating in the CMS Quality Rating System (QRS).

• MY 2024 HEDIS for the Quality Rating System Value Set Directory (Posted April 1, 2024)
• MY 2024 HEDIS for the Quality Rating System Technical Specifications (Posted April 1, 2024)
• MY 2024 Quality Rating System: Technical Update (Posted April 1, 2024)
• HEDIS for the Quality Rating System FAQs

Vol. 3: Specifications for Survey Measures

HEDIS survey measures and standardized surveys from the Consumer Assessment of Healthcare Providers and Systems (CAHPS^®) program.

• Order this publication (Posted September 16, 2024)
• Technical Specifications Update (Posted November 15, 2024)
  Note: The MY 2024 Volume 3 Technical Update will be produced as a full-text publication that includes direct edits. This is in lieu of the memo table format referencing phrasing and edit location. To access the Technical Update, log into your My NCQA account and re-download your Volume 3 epublication. You will find the Technical Update incorporated in the epublication.
• CAHPS 5.1H Survey
• Survey Vendor Certification Program
• MY 2024 Validated Member-Level File Layout (Posted January 10, 2025)

Vol. 5: HEDIS Compliance Audit™: Standards, Policies and Procedures

The approved method for auditing the HEDIS production process, including an information systems capabilities assessment, an evaluation of compliance with HEDIS specifications and standards that Certified HEDIS Compliance Auditors must use when conducting a HEDIS audit.

• Order this publication
• HEDIS Compliance Audit

Vol. 6: The Medicare Health Outcomes Survey Manual

Technical specifications for the Health Outcomes Survey (HOS).

• Order this publication (Anticipated Release Date: May 2025)
• Health Outcomes Survey

HEDIS Technical Specifications for Long-Term Services and Support Measures

The technical specifications for organizations providing Medicaid long-term services and supports (LTSS).

• Order this publication
• Long-Term Services and Supports Programs
• LTSS Technical Specifications Update (Posted April 1, 2024)

Vol. 1: Narrative

Overview of the HEDIS measurement set and how the data are used.

• Order this publication
• HEDIS MY 2023 Summary of Changes
• HEDIS MY 2023 Measure Descriptions

Vol. 2: Technical Specifications for Health Plans

HEDIS nonsurvey measures for organizations; instructions on data collection for each measure; general guidelines for calculations and sampling.

• Order this publication
• Order the HEDIS MY 2023 Digital Measures Bundle
• Technical Specifications Update (Updated April 5, 2023)
• HEDIS MY 2023 Audit Timeline (Posted March 31, 2023)
  Note: Submission deadline extended to June 28, 2024. View this blog post for more details. (Posted April 29, 2024)
• HEDIS MY 2023 Risk Adjustment Tables (Posted March 31, 2023)
  Note: The Risk Adjustment Tables is available for free order in the NCQA Store. Once ordered, the Risk Adjustment Tables is made available in the “My Downloads” tab on My NCQA.”
• HEDIS MY 2023 Medication List Directory (NDC codes) (Posted March 31, 2023)
  Note: The Medication List Directory is available for free order in the NCQA Store. Once ordered, the Medication List Directory is made available in the “My Downloads” tab on My NCQA.”
• HEDIS MY 2023 Public Reporting Memo (Posted October 2, 2023)
• HEDIS MY 2023 Measure Trending Determinations (Updated July 17, 2024)
• HEDIS Electronic Clinical Data System (ECDS)
• HEDIS FAQs

HEDIS Measures Included in the Quality Rating System (QRS)

Quality Rating System Measure Technical Specifications are unique to the issuers offering plans on the Exchange and participating in the CMS Quality Rating System (QRS).

• HEDIS for the Quality Rating System Value Set Directory (Released on: November 30, 2023)
• HEDIS for the Quality Rating System Technical Specifications
• Technical Specifications Update for the Quality Rating System (Updated April 12, 2023)
• HEDIS for the Quality Rating System FAQs

Technical Specifications for ACO Measurement

HEDIS quality measures for Accountable Care Organizations.

• Order this publication

Vol. 3: Specifications for Survey Measures

HEDIS survey measures and standardized surveys from the Consumer Assessment of Healthcare Providers and Systems (CAHPS^®) program.

• Order this publication (Posted May 1, 2023)
• CAHPS 5.1H Survey 
• Survey Vendor Certification Program
• MY 2023 Validated Member-Level File Layout (Posted January 4, 2024)

Vol. 5: HEDIS Compliance Audit™: Standards, Policies and Procedures

The approved method for auditing the HEDIS production process, including an information systems capabilities assessment, an evaluation of compliance with HEDIS specifications and standards that Certified HEDIS Compliance Auditors must use when conducting a HEDIS audit.

• Order this publication
• HEDIS Compliance Audit

Vol. 6: The Medicare Health Outcomes Survey Manual

Technical specifications for the Health Outcomes Survey (HOS).

• Order this publication (anticipated release date: May 2024)
• Health Outcomes Survey

HEDIS Technical Specifications for Long-Term Services and Support Measures

The technical specifications for organizations providing Medicaid long-term services and supports (LTSS).

• Order this publication
• Long-Term Services and Supports Programs

HEDIS Measurement Year 2022

1. HEDIS MY 2022 Summary of Changes (Updated 7/7/2022)
2. HEDIS MY 2022 Measure Descriptions
3. HEDIS MY 2022 Volume 2 Technical Specifications Update (Posted March 31, 2022)
4. HEDIS MY 2022 Audit Timeline
5. HEDIS MY 2022 Risk Adjustment Tables 
6. HEDIS MY 2022 Medication List Directory (NDC codes)
7. HEDIS MY 2022 Public Reporting Memo
8. HEDIS MY 2022 Measure Trending Determinations
9. MY 2022 Quality Rating System Value Set Directory (Posted March 31, 2022)
10. MY 2022 Quality Rating System Technical Specifications
11. MY 2022 Technical Specifications Update for the Quality Rating System (Posted March 31, 2022)
12. Volume 3 MY 2022 Validated Member-Level File Layout (Posted January 9, 2023)
13. Volume 5 Specification Updates (Posted December 15, 2022)

HEDIS Measurement Year 2021

1. HEDIS MY 2020 & MY 2021 (pdf)
2. HEDIS MY 2021 Volume 2 Technical Specifications Update (Posted March 31, 2021)
3. HEDIS MY 2021 Risk Adjustment Tables (Posted April 30, 2021)
4. HEDIS MY 2021 Medication List Directory (NDC codes)
5. HEDIS MY 2021 Public Reporting Memo (Posted October 1, 2021)
6. HEDIS MY 2021 Measure Trending Determinations
7. MY 2021 Quality Rating System Value Set Directory
8. MY 2021 Quality Rating System: Technical Update
9. MY 2021 Volume 5 Technical Specifications Update
10. Volume 3 MY 2021 Validated Member-Level File Layout

The National Drug Code (NDC) Lists are provided by Cerner Multum, Inc. (“Multum”) and are intended for organizations that use NCQA’s HEDIS information.

• HEDIS 2019 (MY 2018) NDC License
• HEDIS 2018 (MY 2017) NDC License
• HEDIS 2017 (MY 2016) NDC License
• HEDIS 2016 (MY 2015) NDC License