38 C.F.R. § 13.10
Purpose and applicability of other regulations
(a) Purpose. The regulations in this part implement the Department of Veterans Affairs' (VA) fiduciary program, which is authorized by 38 U.S.C. chapters 55 and 61. The purpose of the fiduciary program is to protect certain VA beneficiaries who, as a result of injury, disease, or infirmities of advanced age, or by reason of being less than the age of majority, cannot manage their VA benefits. Under this program, VA oversees these vulnerable beneficiaries to ensure their well-being, and appoints and oversees fiduciaries who manage these beneficiaries' benefits.
(b) Applicability of other regulations. Fiduciary matters arise after VA has determined that a beneficiary is entitled to benefits, and decisions on fiduciary matters are not decisions on claims for VA monetary benefits. Accordingly, VA's regulations governing the adjudication of claims for benefits, see 38 CFR part 3, do not apply to fiduciary matters unless VA has prescribed applicability in this part.