
January 23, 2026
CareFirst Sues on Star Ratings The now annual tradition of a Medicare Advantage (MA) plan suing over Star ratings continues. CareFirst BlueCross BlueShield is suing the Centers for Medicare and Medicaid Services (CMS) over its 2026 Star Ratings, alleging improper calculations cost the insurer an estimated $32 million in quality bonus payments. The plan says CMS departed from its own guidance when it used corrected patient safety data released after the close of the plan preview period to calculate Star Ratings. CareFirst says it received a 3.5-star rating instead of 4 Stars for a contract with about 30,000 enrollees. CareFirst says its Drug Plan Quality Improvement Measure for the contract was impacted by CMS contractor Acumen updating data after the close of the Plan Preview period. CMS has a hard rule that issues must be raised by plans before or during Plan Preview 1 and CareFirst says that CMS should
