; or . (2) Conforming amendment Section 1905(a)(29) of the Social Security Act ( 42 U.S.C. 1396d(a)(29) ) is amended by inserting and section 1903(i)(9) after subsection (ee) . (3) Effective date The amendments made by this subsection take effect on October 1, 2019. 7. Limitations on cost-sharing for opioid overdose reversal medications (a) Limitations on cost-Sharing Subpart II of part A of title XXVII of the Public Health Service Act ( 42 U.S.C. 300gg–11 et seq.), as amended by section 6, is further amended by adding at the end the following: 2729B. Limitations on cost-sharing for opioid overdose reversal medications (a) In general A group health plan (other than a self-insured plan) or a health insurance issuer offering group or individual health insurance coverage shall not impose any cost-sharing requirement under the plan or coverage with respect to at least one brand or generic version of opioid overdose reversal drug. (b) Definition In this section, the term opioid overdose reversal drug means a drug or biological approved by the Food and Drug Administration for— (1) complete or partial reversal of opioid depression, including respiratory depression, induced by opioids; or (2) emergency treatment of a known or suspected opioid overdose, as manifested by respiratory or central nervous system depression. . (b) Limitations on cost-Sharing under Medicare part D (1) In general Section 1860D–2(b) of the Social Security Act ( 42 U.S.C. 1395w–102(b) ) is amended— (A) in paragraph (1)(A), by striking The coverage and inserting Subject to paragraph (8), the coverage ; (B) in paragraph (2)(A), by striking and (D) and inserting and (D) and paragraph (8) ; (C) in paragraph (3)(A), by striking and (4) and inserting (4), and (8) ; (D) in paragraph (4)(A)(i), by striking The coverage and inserting Subject to paragraph (8), the coverage