; and (II) the number of units of such antimicrobial drug paid for under such part A. (ii) Special rule For purposes of clause (i), the Secretary shall establish a process for determining the units and the allocated price for those prescription drugs that are not separately payable or for which National Drug Codes are not reported in the diagnosis-related groups. (E) Medicaid program Under the authority of section 1902(a)(6) of the Social Security Act ( 42 U.S.C. 1396a(a)(6) ), the Secretary shall require each State that makes medical assistance available under the State Medicaid program for an applicable antimicrobial drug (including, if applicable, any such drug which is a covered outpatient drug under a rebate agreement entered into under section 1927 of such Act ( 42 U.S.C. 1396r–8 )) to report to the Secretary, not later than the date established under subparagraph (A), for each dosage form and strength and package size of each such drug dispensed during the preceding calendar year under the State Medicaid program, the amount equal to— (i) the product of— (I) the per-unit ingredient cost paid by the State for each such drug; and (II) the number of units of such drug paid for under the State Medicaid program