Open enrollment for 2026 Tricare coverage will take place on time despite the government shutdown, officials told Military.com, while some Tricare services under existing plans are already suspended or likely delayed. The monthlong open enrollment period is scheduled for Nov. 10-Dec. 9. During open enrollment, or open season, beneficiaries may make changes to their Tricare coverage for the upcoming year. Tricare users who want to keep the same coverage don’t need to do anything during open