Two of the nation's largest healthcare groups are suing the Trump administration over a final rule to institute site-neutral payments for clinic visits, saying the policy would hurt patients.

Last month, the Centers for Medicare & Medicaid Services (CMS) finalized the 2019 Outpatient Prospective Payment System (OPPS) rule (PDF), which will gradually institute site-neutral payments in the Medicare program over the next two years. Agency officials said site-neutral payments for clinic visits will lower out-of-pocket costs for beneficiaries and save the program as much as $380 million in 2019.