; or (ii) a drug or biological for which the Secretary has established a separate ambulatory classification group under the prospective payment system for hospital outpatient department services under section 1833(t). (B) Rebate period The term rebate period means, with respect to an agreement under paragraph (2), a calendar quarter or other period specified by the Secretary with respect to the payment of rebates under such agreement. . 3. Protection against high out-of-pocket expenditures for part B drugs Title XVIII of the Social Security Act ( 42 U.S.C. 1395 et seq.) is amended by inserting after section 1847B the following new section: 1847C. Protection against high out-of-pocket expenditures for part B drugs (a) In general Notwithstanding any other provision of this title, in the case of an individual enrolled under this part, if the amount of the out-of-pocket cost-sharing for part B drugs (as defined in subsection (b)) of such individual for a year (beginning with 2020) equals or exceeds the part B drug annual out-of-pocket threshold specified in subsection (c) for the year, section 1833(a)(1)(S) shall be applied by substituting 100 percent for 80 percent . (b) Out-of-Pocket Cost-Sharing for part B drugs defined In this section, the term out-of-pocket cost-sharing for part B drugs means, with respect to an individual, the amount of the expenses incurred by the individual that are attributable to drugs or biologicals furnished under this part. (c) Part B drug annual out-of-Pocket threshold (1) In general For purposes of this section, the part B drug annual out-of-pocket threshold specified in this subsection— (A) for 2020, is equal to the annual out-of-pocket threshold specified in section 1860D–2(b)(4)(B) for 2019, increased by the annual percentage increase in the consumer price index for all urban consumers (United States city average) for the 12-month period ending in July of the 2019