1. Short title This Act may be cited as the Cancer Drug Parity Act of 2018 . 2. Parity in cost sharing for oral anticancer drugs (a) Requirement (1) In general Section 2719A of the Public Health Service Act ( 42 U.S.C. 300gg–19a ) is amended by adding at the end the following new subsection: (e) Parity in cost sharing for oral anticancer drugs (1) In general Subject to paragraph (2), a group health plan, and a health insurance issuer offering group or individual health insurance coverage, that provides benefits with respect to anticancer medications administered by a health care provider shall provide that any cost sharing for prescribed, patient-administered anticancer medications that are used to kill, slow, or prevent the growth of cancerous cells and that have been approved by the Food and Drug Administration is no less favorable than the cost sharing for anticancer medications that is intravenously administered or injected by a health care provider. (2) Limitation Paragraph (1) shall only apply to an anticancer medication that is prescribed based on a finding by the treating physician that the medication— (A) is medically necessary for the purpose of killing, slowing, or preventing the growth of cancerous cells; or (B) is clinically appropriate in terms of type, frequency, extent site, and duration. (3) Restriction on certain changes A group health plan or health insurance issuer may not, in order to comply with the requirement of paragraph (1), make changes to benefits or replace existing benefits with new benefits under the plan or health insurance coverage designed to have the effect of— (A) imposing an increase in out-of-pocket costs with respect to anticancer medications; (B) reclassifying benefits with respect to anticancer medications in a way that would increase such costs