42 C.F.R. § 405.958 Effect of a redetermination.
Title 42 - Public Health
In accordance with section 1869 (a)(3)(D) of the Act, once a redetermination is issued, it becomes part of the initial determination. The redetermination is final and binding upon all parties unless— (a) A reconsideration is completed in accordance with §405.960 through §405.978; or (b) The redetermination is revised as a result of a reopening in accordance with §405.980.
Title 42: Public Health
PART 405—FEDERAL HEALTH INSURANCE FOR THE AGED AND DISABLED
Subpart I—Determinations, Redeterminations, Reconsiderations, and Appeals Under Original Medicare (Part A and Part B)
Redeterminations
§ 405.958 Effect of a redetermination.

