5 C.F.R. § 838.401
(a) This subpart regulates the procedures that the Office of Personnel Management will follow upon the receipt of claims arising out of State court orders that affect refunds of employee contributions under CSRS or FERS. OPM must comply with court orders, decrees, or court-approved property settlements in connection with divorces, annulments of marriages, or legal separations of employees or retirees that—
(b) This subpart prescribes—
(c)