; (B) the Commonwealth of Puerto Rico, the United States Virgin Islands, Guam, American Samoa, and the Commonwealth of the Northern Mariana Islands; and (C) to the extent the Secretary determines appropriate, may include an Indian Tribe, Tribal organization, or Urban Indian organization (as such terms are defined in section 4 of the Indian Health Care Improvement Act ( 25 U.S.C. 1603 )). 303. Uniform applicability to Medicaid of requirements for parity in mental health and substance use disorder benefits (a) Fee-for-Service and alternative benefit plans Section 1902 of the Social Security Act ( 42 U.S.C. 1396a ) is amended— (1) in subsection (a)— (A) by striking and at the end of paragraph (86); (B) by striking the period at the end of paragraph (87) and inserting ; and ; and (C) by inserting after paragraph (87) the following new paragraph: (88) provide for ensuring that the requirements for parity in mental health and substance use disorder benefits under subsection (uu) are complied with regardless of the payment model or arrangement under which medical assistance is provided, including when medical assistance under the State plan or under a waiver of such plan is provided through an alternative benefit plan under section 1937.