Orthopedic providers have filed a lawsuit against Elevance, UnitedHealthcare and other insurers alleging they entered a multibillion-dollar price-fixing scheme with MultiPlan.

The complaint claims the scheme was aimed at suppressing payment rates to doctors for out-of-network services.

The complaint, filed Monday in federal court in Illinois, requests class action status, a jury trial, a determination that the conduct is unlawful and a judgment requiring payment.