If you cannot find your CSA number, do not panic. You can retrieve it through a few different channels:

Subject: OPM Retirement Claim Number

Understanding your OPM retirement claim number is the first step toward securing your federal annuity. This unique identifier, often referred to as a "CSA number," is the key that unlocks access to your benefits, allows you to track your application status, and enables you to manage your retirement account online. What is an OPM Retirement Claim Number?

– Contact OPM’s Retirement Center at 1-888-767-6738 . Be prepared to verify your identity with your SSN, date of birth, and agency name.

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