5 C.F.R. § 841.304 Applications filed with OPM.
Title 5 - Administrative Personnel
(a) Separated employees filing applications for retirement or refunds of contributions; survivors filing applications for death benefits based on the deaths of separated employees, retirees, or survivors; and retirees making elections or seeking to change information in their retirement records must file their applications with OPM. (b) Survivors filing applications for death benefits based on the death of an employee may file their applications with OPM.
Title 5: Administrative Personnel
PART 841—FEDERAL EMPLOYEES RETIREMENT SYSTEM—GENERAL ADMINISTRATION
Subpart C—Claims Processing
§ 841.304 Applications filed with OPM.