1. Short title This Act may be cited as the Seniors Prescription Drug Relief Act of 2019 . 2. Monthly out-of-pocket cost sharing maximum for enrollees who incur a significant portion of costs towards annual out-of-pocket threshold (a) Standard prescription drug coverage Section 1860D–2(b)(2) of the Social Security Act ( 42 U.S.C. 1395w–102(b)(2) ) is amended— (1) in subparagraph (A), by striking and (D) and inserting , (D), and (E) ; (2) in each of subparagraphs (C)(i) and (D)(i), by striking paragraph (4) and inserting paragraph (4), and subject to subparagraph (E)