No. Term appointments are excluded from CSRS or CSRS Offset retirement coverage. Individuals who receive a term appointment and who are not automatically covered by FERS are covered by FICA (Social Security) with the option to elect FERS coverage. Since you previously had over 15 years of CSRS service, you are not automatically covered under FERS. You coverage should be FICA. If you don't elect FERS coverage, and then later convert to an appointment not excluded from CSRS (a career appointment, for example), you would then be covered under CSRS or CSRS Offset depending on when you last worked as a CSRS employee.
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