The coverage determination is binding on the Part D plan sponsor and the enrollee unless it is reviewed and revised under § 423.580 through § 423.604 and § 423.1970 through § 423.1976 or is reopened and revised under § 423.1978.
[70 FR 4525, Jan. 28, 2005, as amended at 74 FR 65363, Dec. 9, 2009]