II 116th CONGRESS 1st Session S. 551 IN THE SENATE OF THE UNITED STATES February 25, 2019 Mr. Durbin (for himself and Mr. Portman ) introduced the following bill; which was read twice and referred to the Committee on Finance A BILL To amend title XVIII of the Social Security Act to require manufacturers of certain single-dose vial drugs payable under part B of the Medicare program to provide rebates with respect to amounts of such drugs discarded, and for other purposes.