Certain reductions in cost-sharing

A reduction in the annual deductible, a reduction in the coinsurance percentage or, for a year preceding 2025, an increase in the initial coverage limit with respect to covered part D drugs, or any combination thereof, insofar as such a reduction or increase increases the actuarial value of benefits above the actuarial value of basic prescription drug coverage.

Nothing in this paragraph shall be construed as affecting the application of subsection (c)(3).