Frozen Service Field Instruction

Frozen Service

Enter the total years and months of civilian and/or military service, creditable for calculation of the Service Computation Date for leave, at the time the employee first becomes covered by FICA and CSRS (retirement coverage codes C and E) or by Federal Employees Retirement System and FICA (retirement coverage codes K, L, M, or N).
‎The first two positions must be 00 through 99 (number of years); last two positions must be 01 through 12 (number of months).
‎Retirement Plan code cannot be 4 or 5.