42 C.F.R. § 405.842 Notice of reopening and revision.
Title 42 - Public Health
(a) Notice. When any determination or decision is reopened as provided in §405.841, notice of such reopening shall be mailed to the parties to such determination or decision at their last known addresses. A notice of revision following a reopening of a decision, shall be mailed to the parties and shall state the basis for the revised determination or decision. (b) Effect of revised determination. The revision of a determination (see §405.841) shall be binding upon all parties thereto unless a party files a written request for a hearing with respect to a revised determination when the amount in controversy is $100 or more. [32 FR 18028, Dec. 16, 1967, as amended at 39 FR 12098, Apr. 3, 1974. Redesignated at 42 FR 52826, Sept. 30, 1977; 62 FR 25855, May 12, 1997]
Title 42: Public Health
PART 405—FEDERAL HEALTH INSURANCE FOR THE AGED AND DISABLED
Subpart H—Appeals Under the Medicare Part B Program
§ 405.842 Notice of reopening and revision.

