42 C.F.R. § 422.578 Right to a reconsideration.
Title 42 - Public Health
Any party to an organization determination (including one that has been reopened and revised as described in §422.616) may request that the determination be reconsidered under the procedures described in §422.582, which address requests for a standard reconsideration. An enrollee or physician (acting on behalf of an enrollee) may request an expedited reconsideration as described in §422.584.
Title 42: Public Health
PART 422—MEDICARE ADVANTAGE PROGRAM
Subpart M—Grievances, Organization Determinations and Appeals
§ 422.578 Right to a reconsideration.