1. Short title This Act may be cited as the Patients’ Access to Treatments Act of 2017 . 2. Cost-sharing requirements applicable to prescription drugs in a specialty drug tier (a) In general Subpart II of part A of title XXVII of the Public Health Service Act ( 42 U.S.C. 300gg et seq.) is amended by adding at the end the following: 2719B. Cost-sharing requirements applicable to prescription drugs in a specialty drug tier (a) Requirement A group health plan, or a health insurance issuer offering group or individual health insurance, that provides coverage for prescription drugs and uses a formulary or other tiered cost-sharing structure shall not impose cost-sharing requirements applicable to prescription drugs in a specialty drug tier that exceed the dollar amount (or its equivalent) of cost-sharing requirements applicable to prescription drugs in a non-preferred brand drug tier (or prescription drugs in a brand drug tier if there is no non-preferred brand drug tier). (b) Special rule If a formulary used by a group health plan or a health insurance issuer offering group or individual health insurance contains more than one non-preferred brand drug tier, then the requirements of subsection (a) shall be applied with respect to the non-preferred brand drug tier for which beneficiary cost-sharing is lowest. (c) Definitions In this section: (1) The term cost-sharing includes co-payment and coinsurance. (2) The term drug tier means, with respect to a group health plan or health insurance issuer offering group or individual health insurance coverage that uses a formulary or other cost-sharing structure, a category of drugs— (A) within such formulary or structure for which the total dollar amount of cost-sharing requirements for any drug does not vary by more than ten percent from the total dollar amount of cost-sharing requirements for any other drug