Health Affairs January 10, 2024
Calls for parsimony and alignment in health care quality measurement necessitate frequent reevaluation of priority measures, to allow focus on measures that represent a meaningful opportunity to improve health outcomes. In this spirit, we believe the time has come to reconsider the use of medication adherence measures in the Medicare Star Rating System, which is designed to help Medicare consumers meaningfully compare the quality of health and drug services across Medicare Advantage and prescription drug plans. As we will describe in this article, these measures no longer meaningfully discern quality differences across plans or providers. Heavy financial incentivization is driving gaming behavior to increase prescription delivery that is likely uncorrelated with actual medication use, and the correlation between improvements in...