; (C) the Medicaid drug rebate program under section 1927 of the Social Security Act ( 42 U.S.C. 1396r–8 ), the 340B drug pricing program under section 340B of the Public Health Service Act ( 42 U.S.C. 256b ), and part B of title XVIII of the Social Security Act ( 42 U.S.C. 1395j et seq. ), including compliance with such programs; (D) expenditures under State Medicaid programs; and (E) prices for such drugs under the Medicaid program in States that do not enter into such arrangements; (2) analyze all the types of value-based purchasing arrangement pricing structures, which structures are working well (as measured by price and ease of implementing), and which need improvement; and (3) study the potential long-term savings for States that enter into such arrangements under State Medicaid programs. (b) Report Not later than June 30, 2028, the Comptroller General of the United States shall submit to Congress a report containing the results of the study conducted under subsection (a).