; and (B) by adding at the end the following new paragraphs: (10) Tying cost-sharing to net price for certain medications (A) In general For plan years beginning on or after January 1, 2028, for costs above the annual deductible specified in paragraph (1) and below the annual out-of-pocket threshold specified in paragraph (4), any coinsurance amount for a discount-eligible drug that is included on the plan's formulary and subject to coinsurance rather than a copayment shall be calculated based on the net price of such discount-eligible drug. (B) Reporting to the Secretary For plan years beginning on or after January 1, 2028, a PDP sponsor of a prescription drug plan and an MA organization offering an MA–PD plan shall annually submit to the Secretary, in a form and manner determined appropriate by the Secretary— (i) approximate price concessions and net prices for each discount-eligible drug; and (ii) a written explanation of the methodology used to calculate such approximate price concessions and net prices. (C) Requirements for approximate price concessions (i) In general Approximate price concessions submitted under subparagraph (B) shall comply with— (I) the drug-specific threshold under clause (ii) for the applicable plan year; and (II) the aggregate threshold under clause (iii) for the applicable plan year. (ii) Thresholds (I) Plan years 2028 through 2032 For plan years 2028 through 2032— (aa) the drug-specific threshold is 20 percent