To amend title XVIII of the Social Security Act to require PDP sponsors of a prescription drug plan under part D of the Medicare program that use a formulary to include certain generic drugs and biosimilar biological products on such formulary, and for other purposes.

This bill, designated as H.R. 8143 in the 119th Congress, aims to amend title XVIII of the Social Security Act concerning prescription drug plans under Medicare Part D. The bill requires pharmacy drug plan sponsors using a formulary to include specific generic drugs and biosimilar biological products on that formulary.