Veterans and Medicare Guide

TRICARE For Life and Medicare

TRICARE For Life is Medicare-wraparound coverage for eligible TRICARE beneficiaries. Medicare generally processes covered civilian care first, and TFL may pay remaining eligible amounts second.

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Written and reviewed by Benjamin Thompson, licensed Medicare brokerLast reviewed August 2026

Quick answer: Most people become eligible for TRICARE For Life when they have Medicare Part A and are enrolled in Part B. For services covered by both Medicare and TRICARE, Medicare generally pays first and TFL pays second. You do not enroll in a separate TFL plan, and TFL normally has no enrollment fee, but you continue paying the Medicare Part B premium.

Eligibility Foundation

Medicare Parts A and B Usually Activate TFL

TRICARE beneficiaries who become entitled to premium-free Medicare Part A generally must also have Part B to remain eligible for TRICARE coverage, including TFL. Limited exceptions can apply, so verify your personal status in DEERS and with the TRICARE contractor before changing Part B.

Do not treat Part B as optional without verification. Missing or dropping Part B can interrupt TRICARE eligibility. Coordinate Social Security, DEERS and TRICARE records before the Medicare effective date.

If you are nearing 65, start with the Turning 65 Medicare guide and official TRICARE instructions.

Who Pays First?

How Medicare and TFL Coordinate Claims

Situation	Typical payer order	What you may owe
Service covered by Medicare and TRICARE	Medicare first; TFL second.	Often little or nothing after both process the claim, but exclusions and billing rules can matter.
Covered by Medicare but not TRICARE	Medicare pays under Medicare rules.	Medicare deductible and coinsurance can remain.
Covered by TRICARE but not Medicare	TRICARE processes the claim.	TRICARE deductible or cost share may apply.
Not covered by either program	Neither pays.	You may owe the full charge.
Care outside the United States	TRICARE is commonly primary because Medicare generally has very limited foreign coverage.	TFL deductible and cost share may apply; claims may need to be filed manually.

Employer insurance, the Federal Employees Health Benefits Program, Medicaid or another policy can change payer order. Use Medicare’s Who pays first guidance and tell every program about other coverage.

Providers and Claims

Using TFL With Civilian Providers

You may generally receive care from Medicare-participating and Medicare non-participating providers. A provider who has opted out of Medicare creates different costs and claim responsibilities. Ask both whether the provider accepts Medicare and whether the provider accepts TRICARE before care is scheduled.

Automatic crossover

In many U.S. situations, the Medicare claim crosses over electronically to the TFL contractor after Medicare processes it.

Manual claim

A manual TRICARE claim may be needed when crossover does not occur, for certain non-participating care or for care outside the United States. Keep Medicare notices and itemized bills.

TFL is not a Medigap policy. It is a Department of Defense benefit with its own covered services and rules. A separate Medicare Supplement may duplicate protection for many TFL beneficiaries and should not be assumed necessary.

Prescription Coverage

TRICARE Pharmacy Benefits and Part D

TRICARE pharmacy coverage is creditable for Medicare Part D. TRICARE states that most beneficiaries gain little from buying a Part D plan. Keep your creditable-coverage documentation and compare any proposed drug plan carefully before enrolling.

If you qualify for Medicare Extra Help, Part D can sometimes deserve a closer review. Otherwise, consider the additional premium, formulary, pharmacy network and possible administrative complexity against the TRICARE pharmacy benefit you already have. See the creditable drug coverage guide.

Medicare Advantage

Can You Use TFL With Medicare Advantage?

Yes. You must continue to have Parts A and B, and the Medicare Advantage plan becomes the primary Medicare payer for covered services. The plan’s network, referrals and prior-authorization rules apply first. TFL can then process remaining eligible amounts, but coordination may require additional documentation or manual claims.

Possible reasons to consider it

Extra benefits you expect to use
A plan network that includes your doctors and military treatment facilities
A defined annual medical spending limit under the plan

Reasons to be cautious

Network or referral limits compared with Original Medicare
Prior authorization
Duplicate drug or supplemental benefits
More complex TFL claim coordination

Work through the full Medicare Advantage for Veterans decision guide before enrolling.

Practical Checklist

TRICARE For Life Coordination Checklist

Confirm Medicare Part A and Part B effective dates.
Update Medicare information in DEERS and verify TFL eligibility.
Keep the Medicare card and uniformed services ID card available.
Ask each civilian provider whether it accepts Medicare and TRICARE.
Review other health insurance because it can change payer order.
Keep Medicare Summary Notices and itemized bills until both programs process the claim.
Use TRICARE’s official overseas and claim-filing instructions when traveling.
Verify any Medicare Advantage plan’s network and claims process before enrolling.

Veterans and Medicare Series

Continue With the Guide That Matches Your Coverage

Hub guideVeterans and Medicare →Separate-system guideVA Health Care and Medicare →

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Coordination guideCHAMPVA and Medicare →Plan-choice guideMedicare Advantage for Veterans →

Common Questions

TRICARE For Life and Medicare FAQ

Is TRICARE For Life free?

TFL normally has no separate enrollment fee, but beneficiaries must continue paying the Medicare Part B premium and may owe costs for services not covered by both programs.

Do I need a Medicare Supplement with TFL?

Usually not. TFL already functions as wraparound coverage for many Medicare-covered services. Compare any separate premium against actual remaining costs and verify coordination before buying Medigap.

Do I need Medicare Part D?

Usually not solely for penalty protection because TRICARE pharmacy coverage is creditable. A Part D plan may deserve review in limited circumstances, including Extra Help, but confirm the interaction first.

Can I see any Medicare doctor?

TFL can work with Medicare-participating and non-participating providers, but provider participation affects billing. Medicare opt-out providers create different rules. Confirm acceptance before care.

What happens overseas?

Medicare generally has very limited coverage outside the United States, so TRICARE is commonly primary. You may need to pay and file a claim under TRICARE’s overseas rules.

Official Information

Sources

Independent Medicare Help

Evaluate Medicare Plans Around the TFL Coverage You Already Have

Thompson Medicare Brokerage can help Missouri and Illinois residents compare the Medicare plans it represents. TFL eligibility, overseas care and claim determinations remain with TRICARE and its contractors.

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Thompson Medicare Brokerage is an independent, non-government insurance agency. It is not affiliated with or endorsed by the U.S. Department of Veterans Affairs, Department of Defense, TRICARE, CHAMPVA, Medicare or any federal agency. This page provides general educational information. Official agency guidance and plan documents control.