If you are a Federal annuitant, including a survivor annuitant, a deferred annuitant, or a compensationer, you are eligible to apply for coverage. Separated Federal employees with title to a deferred annuity may apply for coverage, even if they are not yet receiving that annuity.
Code of Federal Regulations
[68 FR 5534, Feb. 4, 2003, as amended at 70 FR 30607, May 27, 2005]