[Code of Federal Regulations] [Title 42, Volume 3] [Revised as of October 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 42CFR423.251] [Page 408] TITLE 42--PUBLIC HEALTH HUMAN SERVICES PART 423_VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT--Table of Contents Subpart F_Submission of Bids and Monthly Beneficiary Premiums; Plan Approval Sec. 423.251 Scope. This section sets forth the requirements and limitations on submission, review, negotiation and approval of competitive bids for prescription drug plans and MA-PD plans; the calculation of the national average bid amount; and the determination of enrollee premiums.