A class action filed in late August 2023 in Connecticut federal court alleges Cigna uses its PxDx tool to batch-deny claims, knowing most members will not appeal. The lead plaintiff alleges coverage for preventive tests was denied through PxDx, and that her credit score fell as a result. Cigna says PxDx reviews take place after treatment, so do not deny patients care, and that the tool is not built on AI or an algorithm.