TRICARE Open Season Runs Nov. 12 to Dec. 10. TRICARE Open Season is for enrollment in a TRICARE Prime or TRICARE Select health plan. Federal Benefits Open Season is for vision coverage or retiree dental coverage through the Federal Employees Dental and Vision Insurance Program (FEDVIP). If you are enrolled in a TRICARE health plan and do not want to make any changes, you do not have to do anything. If you have the TRICARE Retiree Dental Program (TRDP), provided by Delta Dental, and want dental coverage in 2019, you will need to choose a FEDVIP dental plan. For more tips on how to approach TRICARE Open Season, see this Paycheck Chronicles post.