; and (B) may, after such admission, be modified by the rehabilitation physician treating such individual to include other skilled therapeutic modalities, including recreational therapy, respiratory therapy, and other skilled services specified by the Secretary. . (b) Effective date The amendment made by subsection (a) shall apply to admissions occurring after December 31, 2023, or the last day of the emergency period described in section 1135(g)(1)(B) of the Social Security Act ( 42 U.S.C. 1320b–5(g)(1)(B) ), whichever is sooner.