In June 2026, Arizona brought a lawsuit against MultiPlan, Inc. and eight of its client-insurers in Arizona state court.  The complaint alleges that MultiPlan and its co-conspirator clients artificially suppressed the prices they paid for out-of-network medical care below reasonable levels, decreasing payments to healthcare providers and increasing the out-of-pocket costs for patients.  Arizona alleges that MultiPlan sets the prices for out-of-network medical services in the United States for all its clients using a proprietary algorithm that sets a fixed price for each service.  As described in the complaint, the client-insurers supply MultiPlan with their claims, pricing and information data that Multiplan uses to inform the algorithms it uses to reprice out-of-network healthcare services.  Arizona alleges that this arrangement prevented Multiplan’s client-insurers from competing or setting payments independently and that the insurers instead delegated their negotiation decisions to MultiPlan.

The complaint brings claims against MultiPlan and its alleged co-conspirators under the Arizona Uniform State Antitrust Act and the Arizona Consumer Fraud Act.