1. Short title This Act may be cited as the Lower Drug Costs for Families Act . 2. Application of prescription drug inflation rebates to drugs furnished in the commercial market; change of base year for rebate calculations (a) Part B drugs (1) Application of prescription drug inflation rebates to drugs furnished in the commercial market Section 1847A(i) of the Social Security Act (42 U.S.C. 1395w–3a(i)) is amended— (A) in paragraph (1)(A)(i), by striking units and inserting billing units ; (B) in paragraph (2)(A), by striking for which payment is made under this part and inserting that would be payable under this part if such drug were furnished to an individual enrolled under this part ; and (C) in paragraph (3)— (i) in subparagraph (A)(i), by striking units and inserting billing units