38 C.F.R. § 20.1103
Link to an amendment published at 84 FR 191, Jan. 18, 2019.
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 Rule 302 (§ 20.302 of this part).
(Authority: 38 U.S.C. 7105)