839.1206—How do I submit a claim under this subpart?
(a)
No specific form is required. Your request must be in writing and contain the following information:
(5)
It must include any information you believe OPM should consider, such as cancelled checks or other evidence of amounts you paid.
(b)
Send your claim to: Office of Personnel Management, Retirement and Insurance Service, ATTN: FC Section, Washington, DC 20415-3200