; and (2) in clause (ii), by striking second 6 months and inserting last 5 months . 1853. Medicare improvement fund Section 1898(b)(1) of the Social Security Act ( 42 U.S.C. 1395iii(b)(1) ) is amended by striking $466,795,056 and inserting $2,250,795,056 . B Military Construction Authorizations 2001. Short title This division and title XLVI of division D may be cited as the Military Construction Authorization Act for Fiscal Year 2024 . 2002. Expiration of authorizations and amounts required to be specified by law (a) Expiration of authorizations after three years Except as provided in subsection (b), all authorizations contained in titles XXI through XXVII for military construction projects, land acquisition, family housing projects and facilities, and contributions to the North Atlantic Treaty Organization Security Investment Program (and authorizations of appropriations therefor) shall expire on the later of— (1) October 1, 2026; or (2) the date of the enactment of an Act authorizing funds for military construction for fiscal year 2027. (b) Exception Subsection (a) shall not apply to authorizations for military construction projects, land acquisition, family housing projects and facilities, and contributions to the North Atlantic Treaty Organization Security Investment Program (and authorizations of appropriations therefor), for which appropriated funds have been obligated before the later of— (1) October 1, 2026; or (2) the date of the enactment of an Act authorizing funds for fiscal year 2027 for military construction projects, land acquisition, family housing projects and facilities, or contributions to the North Atlantic Treaty Organization Security Investment Program. 2003. Effective date Titles XXI through XXVII shall take effect on the later of— (1) October 1, 2023