42 C.F.R. § 423.48 Information about Part D.
Title 42 - Public Health
Each Part D plan must provide, on an annual basis, and in a format and using standard terminology that CMS may specify in guidance, the information necessary to enable CMS to provide to current and potential Part D eligible individuals the information they need to make informed decisions among the available choices for Part D coverage.
Title 42: Public Health
PART 423—VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT
Subpart B—Eligibility and Enrollment.
§ 423.48 Information about Part D.

