section if such individuals were enrolled for such year in a qualified health plan through an Exchange. (ii) Specific requirements The Secretary shall make the determination under clause (i) on a per enrollee basis and shall take into account all relevant factors necessary to determine the value of the premium tax credits and cost-sharing reductions that would have been provided to eligible individuals described in section 1331 of the Patient Protection and Affordable Care Act, including the age and income of the enrollee, geographic differences in average spending for health care across rating areas, the health status of the enrollee for purposes of determining risk adjustment payments and reinsurance payments that would have been made if the enrollee had enrolled in a qualified health plan through an Exchange, and whether any reconciliation of the credit or cost-sharing reductions would have occurred if the enrollee had been so enrolled. This determination shall take into consideration the experience of other States with respect to participation in an Exchange and such credits and reductions provided to residents of the other States, with a special focus on enrollees with income below 200 percent of poverty. (D) Certification (i) In general The Chief Actuary of the Centers for Medicare & Medicaid Services, in consultation with the Office of Tax Analysis of the Department of the Treasury, shall certify whether the methodology used to make determinations under subparagraph (C), and such determinations, meet the requirements of this paragraph. (ii) Corrections The Secretary shall adjust the payment to the Trust Fund for any plan year to reflect any error in the determinations under subparagraph (C) for any preceding plan year. (iii) Application Coverage provided through enrollment under this part and parts B and D pursuant to this section shall be treated as coverage under a qualified health plan in the silver level of coverage in the individual market offered through an Exchange and the Secretary shall be