shall not impose any utilization control policies or procedures (as defined by the Secretary), including prior authorization requirements, with respect to medication-assisted treatment covered under the plan or coverage. . (b) No prior authorization or other utilization restrictions under Medicaid (1) Prohibition Section 1903(i) of the Social Security Act ( 42 U.S.C. 1396b(i) ) is amended by inserting after paragraph (8), the following: (9) with respect to any amount expended for medical assistance for medication-assisted treatment (as defined in section 1905(ee)) if the State imposes any utilization control policies or procedures (as defined by the Secretary), including any prior authorization requirements, with respect to the provision of such assistance