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The Healthcare Effectiveness Data and Information Set (HEDIS) is a tool used by more than 90 %of America's health plans to measure performance on important dimensions of care and service. HEDIS consists of 71 measures across 8 domains of care. Because so many plans use HEDIS and because the measures are so specifically defined, HEDIS can be used to make comparisons among plans. To ensure that HEDIS stays current, the National Committee for Quality Assurance (NCQA) has established a process to evolve the measurement set each year through its Committee on Performance Measurement.


  • National Committee for Quality Assurance (NCQA)



Selected Content

HEDIS measures address a range of health issues including: asthma medication use; persistence of beta-blocker treatment after a heart attack; controlling high blood pressure; comprehensive diabetes care; breast cancer screening; antidepressant medication management; immunization status; and advising smokers to quit.

Response rate and sample size

HEDIS is used by more than 90% of America's health plans.