; (B) in subparagraph (F)(ii), by striking plus after the semicolon and inserting and ; and (C) by inserting after subparagraph (F)(ii), the following: (G) for calendar quarters beginning on or after January 1, 2025, 100 percent of the amount determined for such quarter under subsection (cc); and ; and (2) by adding the end the following: (cc) Enhanced payment for integrated mental health and substance use disorder care services (1) In general For purposes of subsection (a)(3)(G), in accordance with guidance issued not later than the date that is 180 days after the date of the enactment of this subsection by the Secretary to States, the amount determined under this subsection with respect to a State and calendar quarter is the amount by which— (A) the aggregate amount expended by the State during the calendar quarter for medical assistance provided by a primary care practitioner (as defined in section 1833(x)(2)(A)(i)) for integrated mental health and substance use disorder care services described in section 1848(b)(13)(B) and such other items and services for the care of mental health and substance use conditions furnished by, or in coordination with, such primary care practitioner as the Secretary, in consultation with the State, may specify; exceeds (B) the quarterly average of the aggregate amounts expended by the State for medical assistance described in subparagraph (A) during the applicable base period for the calendar quarter involved. (2) Applicable base period defined (A) In general For purposes of paragraph (1), the term applicable base period means, with respect to a calendar quarter, the 5-year period that ends on the most recent base period end date. (B) Base period end date defined For purposes of subparagraph (A), the term base period end date means— (i) December 31, 2024