Summary: The Adventist Health System Sunbelt Healthcare Corporation (AHS), a Florida-based non-profit and the largest Protestant hospital system in the U.S., has initiated legal proceedings against MultiPlan, Inc., a healthcare cost management firm based in New York, along with several other prominent healthcare insurance providers in the U.S. These include Aetna, Elevance Health, Centene Corporation, The Cigna Group, Health Care Service Corporation, UnitedHealth Group Inc., and Humana Inc. The lawsuit accuses these entities, collectively termed as the MultiPlan Cartel, of colluding to reduce payments from commercial insurers to healthcare providers for out-of-network medical services. The lawsuit asserts that MultiPlan has persuaded nearly all significant healthcare insurance providers in the U.S. to utilize its repricing tools. These tools allegedly generate a reimbursement amount significantly lower than what the payor would typically disburse on a claim. This repricing strategy, dubbed "MultiPlan 2.0", purportedly employs analytics and data-driven tools, leading to an estimated annual underpayment of approximately $19 billion to healthcare providers. The legal action contends that MultiPlan's activities violate federal antitrust law, specifically Section 1 of the Sherman Act and Sections 4 and 16 of the Clayton Act. It alleges that these actions have inflicted substantial financial damage on AHS, amounting to hundreds of millions of dollars. The lawsuit seeks compensation for these damages and demands a trial by jury.