; or (III) any other circumstance specified by the Secretary. (iii) With respect to a covered part D drug dispensed by a pharmacy, the pharmacy benefit manager may not charge such sponsor a different amount for such drug’s ingredient cost or dispensing fee than the amount the pharmacy benefit manager reimburses such pharmacy for such drug’s ingredient cost or dispensing fee. (iv) With respect to a covered part D drug dispensed by a network pharmacy, the pharmacy benefit manager may not reimburse such pharmacy an amount less than the amount the pharmacy benefit manager would reimburse an affiliated pharmacy for such drug. (v) With respect to each covered part D drug included on the formulary of such plan for which there is a drug that is not included on such formulary with a therapeutic equivalence rating of AB (as established pursuant to section 505(j)(7) of the Federal Food, Drug, and Cosmetic Act) in the same therapeutic class or category of such covered part D drug, the pharmacy benefit manager shall submit to such plan a report specifying the difference between the national average drug acquisition cost (as published by the Secretary) for such drug not included in such formulary and the negotiated prices for such drug that is included in such formulary. (B) Certification Each PDP sponsor (and each pharmacy benefit manager providing services under a prescription drug plan furnished by such sponsor) shall furnish to the Secretary (in a time and manner specified by the Secretary) an annual certification of compliance with this paragraph, as well as such information as the Secretary determines necessary to carry out this paragraph. (C) Disgorgement of prohibited payments A pharmacy benefit manager shall disgorge to the Secretary any payment, remuneration, or other amount received in violation of this paragraph or the contract entered into with a PDP sponsor under this part with respect to a prescription drug plan. A PDP sponsor shall suspend payments to a pharmacy benefit manager for failure to disgorge such