Cigna, Aetna, Others Face Antitrust Claims Over Out-of-Network Payments

“They are mistaken about the identity of Zelis's clients, the operation of Zelis's solutions, and the benefits Zelis provides to patients, providers, and health plans,the Zelis press office said. “Zelis provides highly customizable solutions that our clients leverage independently. Nothing about any of Zelis's solutions is unlawful.