By Federalregister.gov     October 2026

Open Season is an annual period when beneficiaries may enroll in a health plan or make changes to their health care, dental, and/or vision coverage for the next calendar year.

During the TRICARE Open Season running from Nov. 9 through Dec. 8, 2026, qualified Military Health Systems (MHS) beneficiaries may enroll in or change their TRICARE Prime or TRICARE Select plan. (Open season doesn’t apply to active-duty service members.)

During the Federal Employee Dental and Vision Insurance Program (FEDVIP) Open Season running from Nov. 9 through Dec. 14, 2026, qualified MHS beneficiaries, including TRICARE For Life beneficiaries, may enroll in or make changes to their dental and/or vision plans. FEDVIP is operated by the Office of Personnel Management.

Any changes MHS beneficiaries make during Open Season will take effect Jan. 1, 2027. If a beneficiary remains eligible and does not make any changes during Open Season, then his/her coverage will remain the same for 2027.

TRICARE enrollees can ensure they receive important health plan information by promptly entering any change in mailing address, email address, and other information in the Defense Enrollment Eligibility Reporting System (DEERS) and verifying their preference for receipt of information digitally or by paper mailings with their respective regional contractors.

TRICARE enrollees can avoid any health care coverage gaps by ensuring changes in their payment information are also updated with their regional contractors. See TRICARE Plans and Eligibility as a guide for when to update information in DEERS throughout the year.