; and (2) in paragraph (4)— (A) in subparagraph (A), by inserting and coverage in every category is included before the semicolon; (B) by redesignating subparagraphs (E) through (H) as subparagraphs (F) through (I), respectively; and (C) by inserting after subparagraph (D) the following: (E) ensure that, to be treated as providing coverage for the essential health benefits described in paragraph (1), a qualified health plan— (i) shall not substitute benefits across the various categories described in paragraph (1); (ii) shall provide a wide variety of classes of prescription drugs on the prescription drug formulary of such plan; (iii) shall, if a medically necessary drug is not on the prescription drug formulary of such plan, allow individuals enrolled in such plan to have access to the drug through an exceptions process established by the plan; and (iv) shall provide coverage of habilitative services at parity with rehabilitative services, in accordance with regulations promulgated by the Secretary. . 408. Association health plans (a) Treatment of association health plans (1) Association health plan defined For purposes of this subsection, the term association health plan means any health insurance coverage that is provided to an association, but not related to employment, and sold to individuals through such association. (2) Treatment as individual health insurance coverage For purposes of title XXVII of the Public Health Service Act ( 42 U.S.C. 300gg et seq.), part 7 of subtitle B of title I of the Employee Retirement Income Security Act of 1974 ( 29 U.S.C. 1181 et seq.), chapter 100 of the Internal Revenue Code of 1986, and title I of the Patient Protection and Affordable Care Act ( Public Law 111–148 ), health insurance coverage offered through an association health plan shall be treated as individual health insurance coverage if— (A) the coverage is offered to a member of the association other than in connection with a group health plan