; and (2) by inserting before the semicolon at the end the following: , and (JJ) with respect to behavioral health integration services described by HCPCS codes 99492, 99493, 99494, 99484 , G2214, and G0323 (or any successor or substantially similar code) furnished on or after January 1, 2025, the amounts paid shall be equal to 100 percent of the lesser of the actual charge for such services or the fee schedule amount provided under section 1848(b) . II Medicare Advantage and part D provisions 201. Parity in mental health and substance use disorder benefits under Medicare Advantage and prescription drug plans (a) Medicare Advantage plans (1) In general Section 1852 of the Social Security Act ( 42 U.S.C. 1395w–22 ) is amended by adding at the end the following new subsection: (o) Parity in mental health and substance use disorder benefits (1) In general Each MA organization shall ensure that the benefit design of each MA plan offered by such organization meets the following requirements: (A) Financial requirements The financial requirements applicable to mental health or substance use disorder benefits covered by the plan may not exceed the predominant financial requirements applied to substantially all medical benefits covered by the plan, including supplemental benefits, and there are no separate cost sharing requirements that are applicable only with respect to mental health and substance use disorder benefits. (B) Treatment limitations The treatment limitations applicable to mental health or substance use disorder benefits are no more restrictive than the predominant treatment limitations applied to substantially all medical benefits covered by the plan and there are no separate treatment limitations that are applicable only with respect to mental health or substance use disorder benefits, including supplemental benefits. (2) Determinations of medical necessity (A) In general Each MA organization shall ensure that any determination of medical necessity for mental health or substance use benefits under each MA