Elevance Health has sued the U.S. government, alleging that federal efforts to recalculate its Medicare Advantage quality ratings didn't align with a recent court ruling, costing the health insurer $115 million.[2419393][2415420] The suit centers on star ratings, which are supposed to measure the quality of a health plan's care and customer service. Plans that meet certain quality thresholds get extra taxpayer-funded bonuses and rebates.[2419393][2415420]