The purpose of this legislation is to improve how Medicare Advantage plans are compensated based on the health status of their enrollees. It aims to create a fairer system for adjusting payments to these plans by using more accurate and comprehensive data on patients' health conditions. Key provisions of the legislation include several important changes. First, it requires the use of two years of diagnostic data for risk adjustment starting in 2026. This means that Medicare Advantage plans will have a more complete picture of a patient's health history when determining payment rates.