42 C.F.R. § 423.644 Reconsideration: Applicability.
Title 42 - Public Health
(a) Reconsideration is the first step for appealing a contract determination specified in §423.641. (b) CMS reconsiders the specified determinations if the contract applicant or the PDP sponsor files a written request in accordance with §423.645.
Title 42: Public Health
PART 423—VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT
Subpart N—Medicare Contract Determinations and Appeals
§ 423.644 Reconsideration: Applicability.

