Code of Massachusetts Regulations
130 CMR - DIVISION OF MEDICAL ASSISTANCE
Title 130 CMR 450.000 - Administrative and Billing Regulations
Section 450.203 - Payment in Full

(A) Federal and state laws require that participation in MassHealth be limited to providers who agree to accept, as payment in full, the amounts paid in accordance with the applicable fees and rates or amounts established under a provider contract or regulations applicable to MassHealth payment. (See 42 CFR 447.15 and M.G.L. c. 118E, § 36.) No provider may solicit, charge, receive, or accept any money, gift, or other consideration from a member, or from any other person, for any item or medical service for which payment is available under MassHealth, in addition to, instead of, or as an advance or deposit against the amounts paid or payable by the MassHealth agency for such item or service, except to the extent that the MassHealth regulations specifically require or permit contribution or supplementation by the member or by a health insurer.

(B) If the provider receives payment from a member for any service payable under MassHealth without knowing that the member was a MassHealth member at the time the service was provided, the provider must, upon learning that the individual is a MassHealth member, immediately return all sums solicited, charged, received, or accepted with respect to such service.