§423.1. Basis and scope.
42 C.F.R. § 423.1
Basis.
This part is based on the indicated provisions of the following sections of the Social Security Act— 1106. Disclosure of Information in Possession of Agency.
1128J(d). Reporting and Returning of Overpayments.
1860D-1. Eligibility, enrollment, and information.
1860D-2. Prescription drug benefits.
1860D-3. Access to a choice of qualified prescription drug coverage.
1860D-4. Beneficiary protections for qualified prescription drug coverage.
1860D-11. PDP regions; submission of bids; plan approval.
1860D-12. Requirements for and contracts with prescription drug plan (PDP) sponsors.
1860D-13. Premiums; late enrollment penalty.
1860D-14. Premium and cost-sharing subsidies for low-income individuals.
1860D-14A. Medicare coverage gap discount program.
1860D-14C. Manufacturer Discount Program.
1860D-15. Subsidies for Part D eligible individuals for qualified prescription drug coverage.
1860D-16. Medicare Prescription Drug Account in the Federal Supplementary Medical Insurance Trust Fund.
1860D-21. Application to Medicare Advantage program and related managed care programs.
1860D-22. Special rules for Employer-Sponsored Programs
1860D-23. State pharmaceutical assistance programs.
1860D-24. Coordination requirements for plans providing prescription drug coverage.
1860D-31. Medicare prescription drug discount card and transitional assistance program.
1860D-41. Definitions; treatment of references to provisions in Part C.
1860D-42. Miscellaneous provisions.
1860D-43. Condition for coverage of drugs under this part.
The following specific sections of the Medicare Modernization Act also address the prescription drug benefit program:
Sec. 102 Medicare Advantage conforming amendments.
Sec. 103 Medicaid amendments.
Sec. 104 Medigap.
Sec. 109 Expanding the work of Medicare Quality Improvement Organizations to include Parts C and D.
Section 1611 of Title 8 of the United States Code regarding individuals who are not lawfully present and ineligible for Federal public benefits.
Scope. This part establishes standards for beneficiary eligibility, access, benefits, protections, and low-income subsidies in Part D, as well as establishes standards and sets forth requirements, limitations, procedures and payments for organizations participating in the Voluntary Medicare Prescription Drug Program.
Notes, amendments, and revision history
Amendments
[70 FR 4525, Jan. 28, 2005, as amended at 73 FR 30683, May 28, 2008; 79 FR 29962, May 23, 2014; 80 FR 7962, Feb. 12, 2015; 91 FR 17583, Apr. 6, 2026]
Authority
Authority: 42 U.S.C. 1302, 1306, 1395w-101 through 1395w-152, and 1395hh.
Source
Source: 70 FR 4525, Jan. 28, 2005, unless otherwise noted.
Amendments
[70 FR 4525, Jan. 28, 2005, as amended at 73 FR 30683, May 28, 2008; 79 FR 29962, May 23, 2014; 80 FR 7962, Feb. 12, 2015; 91 FR 17583, Apr. 6, 2026]