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38 U.S.C. 501(a) and as noted in specific sections.
57 FR 4109, Feb. 3, 1992, unless otherwise noted.
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A determination on a claim by the agency of original jurisdiction of which the claimant is properly notified is final if an appeal is not perfected as prescribed in § 19.52 of this chapter. If no Notice of Disagreement is filed as prescribed in subpart C of this part, the claim shall not thereafter be readjudicated or allowed, except as provided by 38 U.S.C. 5104B or 5108, or by regulation.
[84 FR 191, Jan. 18, 2019]