Fed Regist. 1990 Jun 18;55(117):24561-8.
This rule establishes in regulations the circumstances in which a nonparticipating physician who does not accept Medicare assignment of a claim is required to refund to the beneficiary any amounts collected for physician services determined to be not reasonable and necessary. Its purpose is to extend limitation of liability protection to beneficiaries with non-assigned claims when the physician knew or could reasonably have been expected to know that Medicare would deny payment for the services. Physician appeal rights are also specified. This rule conforms our regulations to section 9332(c) of the Omnibus Budget Reconciliation Act of 1986.