1. Short title This Act may be cited as the Stop Drug Companies from Overcharging Seniors in Medicare Part B Act of 2019 . 2. Requiring drug manufacturers to provide rebates for drugs furnished under Medicare part B for which ASP growth has exceeded inflation Section 1847A of the Social Security Act ( 42 U.S.C. 1395w–3a ) is amended by adding at the end the following new subsection: (h) Prescription drug rebate agreement (1) Requirement (A) In general Subject to subparagraphs (B) and (C), in order for payment to be made under this part for an applicable part B drug (as defined in paragraph (7)(A)) of a manufacturer furnished on or after January 1, 2020, the manufacturer shall have entered into and have in effect a rebate agreement described in paragraph (2) with the Secretary. (B) Exceptions This subsection shall not apply with respect to an applicable part B drug of a manufacturer— (i) if the Secretary determines that the estimated average annual cost per user for the associated drug billing code as determined in such manner as the Secretary determines appropriate, including with respect to an applicable part B drug for which a HCPCS code has not been assigned, is less than— (I) for 2020, $100; and (II) for a subsequent year, the amount determined under this clause for the preceding year increased by the percentage increase in the consumer price index for all urban consumers (U.S. city average) for the 12-month period ending with June of the previous year