An official website of the United States government
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

News | July 18, 2024

Does TRICARE For Life Work With Other Insurance? Here’s What You Should Know

By TRICARE Communications

Do you have TRICARE For Life? If so, you may know that Medicare and TRICARE For Life work together to minimize your out-of-pocket expenses. After Medicare processes your claim, it forwards the claim to TRICARE For Life for processing. This eliminates the need for you to file a claim. But if you also have other health insurance, also known as “OHI,” you may have to submit a claim in order to receive reimbursement under TRICARE.

OHI is any health insurance you have in addition to TRICARE. Medigap plans and current or former employer group health plan coverage are examples of OHI.

“If you have Medicare, TRICARE For Life, and OHI, each type of coverage is called a ‘payer,’” said Anne Breslin, TRICARE For Life program manager at the Defense Health Agency. “When there’s more than one payer, the order of payment is called ‘coordination of benefits.’ Coordination of benefits rules determine who pays first.”

It’s good to understand how TFL works with OHI. This helps ensure that your claims are paid correctly. Keep reading to learn more.

Reporting your OHI

Medicare doesn’t automatically know if you have OHI. However, insurers must notify Medicare when they’re responsible for paying first on your medical claims.

If you have OHI, you need to tell TRICARE. You can do this by submitting an OHI questionnaire.

  • If you live in the United States or U.S. territories, fill out the TRICARE For Life OHI Questionnaire. Submit the form to the TFL contractor, Wisconsin Physicians Service.
  • If you live outside the U.S. and U.S. territories, fill out the Overseas OHI Questionnaire and send it to the TRICARE Overseas contractor, International SOS. Or you can update your OHI information in your TOP Beneficiary Secure Claims Portal.

In some cases, your health care provider, employer, or insurer may ask questions about your current coverage so they can report that information to Medicare.

Using OHI with TRICARE and Medicare

“How Medicare coordinates claims with your OHI plan depends on whether you’re 65 or older, if you’re working or retired, and the number of people employed by the employer providing the group health plan coverage,” said Breslin. “Regardless of which of these factors apply to you, TRICARE For Life pays last, after Medicare and your OHI plan.”

Medicare pays first and OHI pays second if one of these scenarios applies to you:

  1. You have retiree health coverage (insurance from your or your spouse’s former employment).
  2. You’re 65 or older, you have group health plan coverage based on your or your spouse’s current employment, and the employer has fewer than 20 employees.
  3. You’re under 65 and have a disability, you have group health plan coverage based on your or a family member’s current employment, and the employer has fewer than 100 employees.

However, your group health plan pays first if one of these scenarios applies to you:

  1. You’re 65 or older, you have group health plan coverage based on your or your spouse’s current employment, and the employer has 20 or more employees.
  2. You’re under age 65 and have a disability, you have group health plan coverage based on your or a family member’s current employment, and the employer has 100 or more employees.

Lastly, if you have group health plan coverage based on your or a family member’s employment or former employment, and you’re eligible for Medicare because of end-stage renal disease, your group health plan will pay first for the first 30 months after you become eligible to enroll in Medicare. Medicare pays first after this 30-month period.

How to file claims

When your OHI is the second payer, and there’s a remaining patient liability, you must submit a claim for TRICARE to reimburse you for TRICARE’s portion of your claim.

In the U.S. and U.S. Territories: After your OHI and Medicare have processed a claim, you need to submit a paper claim to Wisconsin Physicians Service, with the following supporting documentation:

  • An itemized provider bill
  • Your Medicare Summary Notice showing what Medicare paid
  • The explanation of benefits from your OHI plan showing what it paid

WPS will process the claim and pay you the portion that TFL covers. You must submit your claim within one year of the date you got care.

If you have any questions about filing claims when you have OHI, contact WPS. The WPS website has instructions and forms for filing secondary claims, FAQs, and more.

Overseas: Medicare doesn’t pay for care you receive overseas, as explained in the TRICARE For Life Handbook. (This doesn’t include U.S. territories.) If you get care overseas with TFL and OHI, you’ll need to file a claim with the TRICARE Overseas contractor to get reimbursed.

Learn more about filing claims overseas and supporting documentation needed for overseas claims.

Learn more about TFL

Looking for more information about TFL? Check out these resources:

Would you like the latest TRICARE news sent to you by email? Visit TRICARE Subscriptions, and create your personalized profile to get benefit updates, news, and more.
 
Pregnant woman standing at a kitchen counter while holding a child's ponytail.

Maintaining oral health during pregnancy

News
May. 22, 2026

Pregnancy brings many changes to your body, and your mouth is no exception. Hormonal shifts, morning sickness,...
Read More
Women sitting on a couch with her hands clasped and her legs crossed.

Getting mental healthcare with TRICARE For Life:...

News
May. 21, 2026

Taking care of your mental health is just as important as taking care of your body—and if you have TRICARE For...
Read More
Man in blue shirt sits at a kitchen table and reads a piece of paper

Print or digital: Your options for getting TRICA...

News
May. 19, 2026

Keeping up to date with TRICARE health information is part of making the right healthcare choices for both you...
Read More
Close up photo of a young girl smiling.

TRICARE Dental Program: Getting coverage for you...

News
May. 14, 2026

A winning smile needs maintenance—including dental care. If you’re enrolled in the TRICARE Dental Program, you...
Read More
Man in gray shirt talks on the phone while looking at a laptop.

Got TRICARE pharmacy questions? Learn how to get...

News
May. 12, 2026

Do you have a question about the TRICARE Pharmacy Program? For example, are you wondering how to find a...
Read More
Two women smile while wearing graduation caps and gowns.

Graduating in 2026? Learn how to stay covered wi...

News
May. 07, 2026

Becoming an adult comes with a lot of new responsibilities—including starting to manage your healthcare. If...
Read More
"A New Way to Log In: Introducing myAuth;" Woman with glasses using a laptop; DHA logo; TRICARE logo;

TRICARE logins transitioning to myAuth in 2026: ...

News
May. 05, 2026

These days, everyone juggles multiple logins for the many services we access online. The Military Health...
Read More
Torsos of two people embracing while wearing sweaters with neutral tones.

Review TRICARE benefits for survivors

News
Apr. 30, 2026

It can be a challenge when a family member passes away. You’re dealing with not only the emotional sense of...
Read More

May 22, 2026

Maintaining oral health during pregnancy

Pregnancy brings many changes to your body, and your mouth is no exception. Hormonal shifts, morning sickness, and changes to diet can all affect your oral health. The good news is that dentists can provide safe, effective care throughout your pregnancy.

May 21, 2026

Getting mental healthcare with TRICARE For Life: What you need to know

Taking care of your mental health is just as important as taking care of your body—and if you have TRICARE For Life, you have coverage that helps you get the care you need, when you need it.

May 19, 2026

Print or digital: Your options for getting TRICARE benefit information

Keeping up to date with TRICARE health information is part of making the right healthcare choices for both you and your family members. Equally important, however, is how you manage your healthcare communications so you have quick and easy access to important records and information. This includes your explanation of benefits statements, bills, claims correspondence, and more.

May 14, 2026

TRICARE Dental Program: Getting coverage for your family members

A winning smile needs maintenance—including dental care. If you’re enrolled in the TRICARE Dental Program, you can get cost-effective, accessible dental services in the U.S. or abroad.

May 12, 2026

Got TRICARE pharmacy questions? Learn how to get answers

Do you have a question about the TRICARE Pharmacy Program? For example, are you wondering how to find a network pharmacy? Or do you want to know if you have coverage for a prescription? This article explains whom to contact to get answers to your pharmacy questions.

May 7, 2026

Graduating in 2026? Learn how to stay covered with TRICARE Young Adult

Becoming an adult comes with a lot of new responsibilities—including starting to manage your healthcare. If you’re a young adult who’s about to age out of regular TRICARE coverage from your parent or step-parent, you still have options. TRICARE Young Adult can help you stay covered while you focus on life's next big steps.

May 5, 2026

TRICARE logins transitioning to myAuth in 2026: What you need to know

These days, everyone juggles multiple logins for the many services we access online. The Military Health System is making life a little easier by switching to myAuth—a simpler, more streamlined login authentication application across its online platforms.

April 30, 2026

Review TRICARE benefits for survivors

It can be a challenge when a family member passes away. You’re dealing with not only the emotional sense of loss, but the many other details that require time, energy, and focus surrounding that loss. One of these concerns may be how your healthcare coverage may change. TRICARE wants you to know that you aren't alone. This article focuses on the benefits TRICARE offers survivors.

April 23, 2026

Dispose of unused prescriptions and keep your community safe on April 25, National Drug Take Back Day

Do you have unused or expired medications sitting in your medicine cabinet? Saturday, April 25 is the perfect day to clear them out. National Drug Take Back Day gives you a safe, easy way to discard drugs you no longer need.

April 20, 2026

Q&A: How TRICARE covers durable medical equipment

You may know someone who uses a wheelchair or walker to get around, or a glucose monitor for their diabetes. These items are just a few of many useful items that TRICARE covers as durable medical equipment. Durable medical equipment is a major part of managing health conditions at home, work, and in daily life, and TRICARE covers a wide range of products.