; (B) in subparagraph (B), in the matter preceding clause (i), by striking In this paragraph and inserting In clause (i) of subparagraph (A) ; and (C) by adding at the end the following new subparagraph: (D) Definition of applicable percent for purposes of annual cap on payment increases In clause (ii) of subparagraph (A), the term applicable percent means the following: (i) Widely available clinical diagnostic laboratory tests With respect to a widely available clinical diagnostic laboratory test— (I) for each of 2024 and 2025, 2.5 percent; (II) for each of 2026 and 2027, 3.75 percent; and (III) for 2028 and each subsequent year, 5 percent. (ii) Other clinical diagnostic laboratory tests With respect to a clinical diagnostic laboratory test not described in clause (i), 5 percent. . (3) Conforming amendment Section 1834A(b)(3) of the Social Security Act ( 42 U.S.C. 1395m–1(b)(3) ) is amended in the heading by striking reductions and inserting medicare payment changes . (e) Regulations (1) Not later than December 31, 2024, the Secretary of Health and Human Services shall implement the amendments made by this section (other than subsection (d)) through notice and comment rulemaking. (2) The Secretary of Health and Human Services may implement the amendments made by subsection (d) through interim final rulemaking, program instruction, or otherwise.