; (II) by striking the period at the end and inserting ; and ; and (III) by adding at the end the following new subclause: (II) for plan year 2021 and each subsequent plan year the copayment amount applied under clause (ii) for the drug and year involved. ; and (B) by adding at the end the following new subparagraph: (F) Rounding Any amount established under clause (ii) of subparagraph (D), including as applied under clause (iii) of such subparagraph or paragraph (2)(E), that is based on an increase of $3, that is not a multiple of 5 cents or 10 cents, respectively, shall be rounded to the nearest multiple of 5 cents or 10 cents, respectively. ; (2) in paragraph (2)— (A) in subparagraph (C), by inserting and subparagraph (E) before the period; (B) in subparagraph (D)— (i) by striking of coinsurance of and inserting of— (I) for plan years before plan year 2021, coinsurance of ; (ii) by striking the period at the end and inserting ; and ; and (iii) by adding at the end the following new subclause: (II) for plan year 2021 and each subsequent plan year, a copayment amount that does not exceed the copayment amount applied under paragraph (1)(D)(ii) for the drug and year involved. ; and (C) in subparagraph (E)— (i) by striking subsection (c), the substitution for and inserting subsection (c)— (i) for plan years before plan year 2021, the substitution for ; (ii) by striking the period at the end and inserting ; and ; and (iii) by adding at the end the following new clause: (ii) for plan year 2021 and each subsequent plan year, the elimination of any cost-sharing imposed under section 1860D–2(b)(4)(A). ; and (3) in paragraph (4)(A)(ii), by inserting (before 2021) after subsequent year .