What Is TRICARE for Life?
TRICARE for Life (TFL) is Medicare-wraparound coverage for TRICARE-eligible retirees, family members, and survivors who have Medicare Part A and Part B, regardless of age. It is not a separate health plan you actively enroll in; it's the automatic result of having both TRICARE eligibility and Medicare Parts A and B. There is no TFL enrollment card or application; DEERS and Medicare records establish eligibility automatically.
Who Qualifies for TRICARE for Life
- Military retirees (active duty, Guard, or Reserve who qualify for retired pay) once they have Medicare Part A and B, at any age, not just 65+. A retiree with Medicare due to disability, for example, qualifies for TFL before 65.
- Eligible family members and survivors of retirees who have Medicare Parts A and B.
- Medal of Honor recipients and their dependents with Medicare Parts A and B.
Active-duty service members and their families are not eligible for TFL; TFL is a retiree/survivor benefit. See our TRICARE options guide for the plans available to active-duty families, or our TRICARE East vs. West guide if you are trying to sort out your regional network before you become TFL-eligible.
How TRICARE for Life Works With Medicare
TFL is the second payer after Medicare for most civilian care in the United States. The order of payment is:
- Medicare pays first for Medicare-covered services from a Medicare-participating provider.
- TRICARE for Life pays second, generally covering most or all of what Medicare doesn't, including the Medicare Part B coinsurance and deductible for covered services.
- For services Medicare doesn't cover but TRICARE does, TRICARE becomes the primary payer.
- For services neither covers, you're responsible for the cost.
Overseas, where Medicare generally does not provide coverage, TRICARE for Life becomes the primary payer for TRICARE-covered services.
What TRICARE for Life Costs
- No TFL premium or enrollment fee: the benefit itself is free.
- You must pay your Medicare Part B premium to keep TFL active; this is set annually by the Centers for Medicare & Medicaid Services (CMS) and is income-adjusted (IRMAA) for higher earners. Check the current premium at medicare.gov.
- Little to no out-of-pocket cost for services covered by both Medicare and TRICARE, since TFL typically picks up the Medicare-approved coinsurance and deductible.
- Retail pharmacy copays follow standard TRICARE Pharmacy Program rules; using military pharmacies or home delivery is typically cheapest.
What TRICARE for Life Covers
TFL covers TRICARE-authorized services, including care Medicare doesn't cover if TRICARE does, for example some overseas care, and certain preventive and dental-adjacent medical services covered by TRICARE's benefit rules. It does not replace Medicare Part D (prescription drugs); TFL beneficiaries use the TRICARE Pharmacy Program instead, which functions as their prescription drug coverage without needing separate Part D enrollment.
Do I Need to Enroll in TRICARE for Life?
There is no separate TFL enrollment. You become TFL-eligible automatically once DEERS shows your TRICARE eligibility and Medicare shows active Part A and Part B coverage. The one action item is making sure you enroll in Medicare Part B when first eligible (usually around age 65, or earlier if eligible due to disability). Delaying Part B enrollment without a valid reason can mean a lifetime late-enrollment penalty from Medicare and a gap in your TFL wraparound coverage.
Key Differences From Regular TRICARE Plans
- No separate TFL enrollment, no monthly TFL premium (only the Medicare Part B premium).
- No primary care manager or referral requirements: you can see any Medicare-participating provider.
- Worldwide coverage, with TRICARE becoming primary payer overseas where Medicare doesn't apply.
For a full comparison of every TRICARE plan option before you're TFL-eligible, see our TRICARE 2026 plans and eligibility guide, or compare TRICARE Prime vs. Select.
tricare-for-life-medicare-advantage">TRICARE for Life and Medicare Advantage (Part C)
TFL beneficiaries are not required to stay on Original Medicare. You may choose to enroll in a Medicare Advantage (Part C) plan instead, and TRICARE for Life continues to work alongside it. The payment order shifts: your Medicare Advantage plan becomes the primary payer for the services it covers, and TFL pays second, generally wrapping around the plan's cost-sharing for TRICARE-covered services the same way it wraps Original Medicare's coinsurance and deductible.
The tradeoff to weigh before switching is network and referral rules. Original Medicare lets TFL beneficiaries see any Medicare-participating provider with no referrals, worldwide. Medicare Advantage plans, by contrast, typically use their own provider networks, prior authorizations, and referral requirements, and coverage is usually limited to the United States. Going outside a Medicare Advantage plan's network can leave you with costs that TFL does not offset the same way it would under Original Medicare, and it can eliminate the referral-free flexibility TFL is built around. Retirees who travel frequently or split time overseas should read a specific plan's coverage rules closely, since Original Medicare generally doesn't pay overseas (where TFL then becomes primary) while Medicare Advantage networks are typically domestic.
There's no single answer to whether a Medicare Advantage plan is "better" with TFL; it depends on your providers, location, and how much network flexibility matters to you. Compare specific plan documents and confirm current rules directly at tricare.mil and medicare.gov, or by calling the TRICARE for Life contractor, before enrolling.