[Code of Federal Regulations] [Title 42, Volume 3] [Revised as of October 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 42CFR423.301] [Page 385] TITLE 42--PUBLIC HEALTH CHAPTER IV--CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES PART 423_VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT--Table of Contents Subpart G_Payments to Part D Plan Sponsors For Qualified Prescription Drug Coverage Sec. 423.301 Scope. This subpart sets forth rules for the calculation and payment of CMS direct and reinsurance subsidies for Part D plans; the application of risk corridors and risk-sharing adjustments to payments; and retroactive adjustments and reconciliations to actual enrollment and interim payments. This subpart does not apply to fallback entities or fallback prescription drug plans.