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HEDIS measurements

What is HEDIS®? 
HEDIS® stands for Healthcare Effectiveness Data and Information Set. It’s a standardized set of measures created by the National Committee for Quality Assurance (NCQA). NCQA is an independent, nonprofit organization. 
 

Health plans use HEDIS to measure quality of care, identify gaps and improve patient outcomes.

Why HEDIS matters and how providers can use this information 

HEDIS helps improve care quality and patient outcomes. Providers play a key role in meeting these measures.

Why it matters:

  • Identifies gaps in patient care
  • Supports preventive care and chronic condition management
  • Impacts quality ratings and incentives

What you can do:

 

  • Use care gap reports to identify patients who need services
  • Submit complete and accurate coding
  • Respond to medical record requests promptly
  • Encourage preventive screenings and follow-up care

How HEDIS data is collected 

HEDIS measures are based on the data you submit. Health plans use claims and encounter data to calculate many measures. Some measures also require medical record review.


You may be asked to submit documentation to confirm care was provided and ensure accurate results.

HEDIS measurement categories

HEDIS measures care across key areas such as:

 

  • Access to care: Ability for members to get needed care, including routine and preventive visits
  • Prevention and screening: Completion of recommended screenings and immunizations
  • Maternity care: Care provided before and after delivery
  • Treatment of acute and chronic illness: Management of conditions such as diabetes, asthma and cardiovascular disease
  • Behavioral health: Follow-up care and treatment
  • Member satisfaction: Satisfaction with care and services

 

For detailed measure specifications, benchmarks and coding guidance, check the Quality Reference Guide.
 

2026 Quality Reference Guide (PDF)

Read your state’s report cards

We’re proud to be among the first health plans to publish HEDIS measurement data. We offer report cards in PDF format for HMO and PPO plans. Not all states have report cards.


Read more and view report cards

Legal notices

Aetna is the brand name used for products and services provided by one or more of the Aetna group of companies, including Aetna Life Insurance Company and its affiliates (Aetna).

Health benefits and health insurance plans contain exclusions and limitations.

HEDIS is a registered trademark of the National Committee for Quality Assurance (NCQA).