Glossary
TRICARE Catastrophic Cap
The annual limit on what a TRICARE family pays out-of-pocket for covered services — protecting TFL beneficiaries from runaway costs.
Also known as: TRICARE cat cap, catastrophic cap
Quick answer
The TRICARE catastrophic cap is the maximum amount a TRICARE family pays each calendar year toward TRICARE-allowable cost shares (deductibles, copays, coinsurance). Once met, TRICARE pays 100% of allowable charges for the remainder of the calendar year. Caps are set annually by DHA and differ by beneficiary category and plan.
Why it matters
On TFL, the catastrophic cap is a backstop. Because TFL already pays Medicare cost shares for dual-covered services, most TFL families never come close to the cap. It still matters for TRICARE-only services (e.g. some overseas care or services Medicare doesn't cover).
Why this matters at age 65
When you move from TRICARE Prime/Select to TFL, the catastrophic cap continues as a family protection. It applies separately to TFL cost shares and does not include the Medicare Part B premium or Medicare-side payments.
When you'll encounter it
Rarely — most TFL beneficiaries owe so little out-of-pocket that the cap is academic. It matters most for non-Medicare-covered TRICARE services and overseas care.
Impact on Medicare
None — the cap is a TRICARE feature, not a Medicare feature, and Medicare premiums never count toward it.
Impact on TRICARE For Life
Functions as a backstop against unusual claim scenarios (services Medicare doesn't cover but TRICARE does, overseas care, etc.).
Impact on Medicare Advantage
Independent of any MA plan's MOOP. The TRICARE cap counts only TRICARE-allowable cost shares, not MA copays.
Military-specific context
Catastrophic cap amounts are published annually in the TRICARE Costs and Fees Sheet at tricare.mil/Costs. They are tied to a beneficiary's plan and category (active duty family vs retiree, etc.).
Common misconceptions
- "Medicare premiums count toward my TRICARE catastrophic cap." — They do not. Only TRICARE cost shares (copays, coinsurance, deductibles on TRICARE-allowable claims) count.
- "Hitting the cap stops the Medicare Part B premium." — No. Medicare premiums are separate and continue regardless of the TRICARE cap.
Common mistakes to avoid
- Confusing the TRICARE catastrophic cap with a Medicare Advantage MOOP — they are separate.
- Counting Medicare-paid amounts toward the cap. Only TFL/TRICARE-allowable cost shares count.
Real-world scenario: A retired Marine family has a year of extensive overseas medical care.
TFL pays as primary overseas. Their TRICARE-allowable cost shares accumulate during the year, eventually hitting the published catastrophic cap. TRICARE then pays 100% of allowable charges for the rest of the calendar year, capping the family's total exposure.
Questions people commonly ask
- What counts toward the TRICARE catastrophic cap?
- Is the catastrophic cap the same as a Medicare Advantage MOOP?
Continue learning
— suggested by the knowledge graph- Understanding Original Medicare (Parts A & B) for veteransExactly what Part A and Part B cover, what they cost in 2026, and why both are required to keep TRICARE For Life.
- Enrolling in Medicare: timing, methods, and the military-specific rulesWhen and how to sign up for Medicare Parts A and B — and the timing that protects your TRICARE For Life activation.
- What is TRICARE For Life? The complete guide for retired militaryThe Medicare-wraparound benefit you earned through service — what it covers, who qualifies, what it costs, and how it activates.
- How Medicare and TRICARE For Life work togetherThe exact mechanics of who pays first, who pays second, and what you owe — for every common care scenario.
- Brand-Name DrugsFDA-approved drugs sold under a manufacturer's proprietary name — middle copay tier on the TRICARE formulary.
- Defense Health Agency (DHA)The DoD combat support agency that runs the Military Health System and administers TRICARE, including TRICARE For Life.
- Express ScriptsThe pharmacy benefit manager that administers the TRICARE Pharmacy Program, including TFL home-delivery and retail-network prescriptions.
- FEDVIPOptional dental and vision insurance retired military can buy through BENEFEDS — fills the dental/vision gap in Medicare and TFL.
- Generic DrugsChemically identical, FDA-approved equivalents of brand-name drugs — the lowest copay tier under TRICARE Pharmacy.
- Military Treatment Facility (MTF) & Space-Available CareDoD military hospitals and clinics — at 65, retirees can only be seen if appointments aren't needed by active duty or TRICARE Prime enrollees.
- Non-Formulary DrugsDrugs not on the TRICARE preferred list — highest copay tier, often requires Medical Necessity approval.
- Non-Network PharmacyA civilian pharmacy that is NOT contracted with Express Scripts — highest cost and usually requires you to pay up front and file a claim.
- What does TRICARE For Life actually cover?TFL is a wraparound. For services Medicare and TFL both cover, TFL pays nearly all remaining cost-shares. For Medicare-only services, TFL still acts as secondary. For TFL-only services (very few), TFL pays as primary.
- Does TFL have a catastrophic cap?Yes. The TRICARE annual catastrophic cap protects you from unlimited out-of-pocket costs on TFL's portion of care.
- What do I actually pay out-of-pocket on TFL?For services covered by both Medicare and TRICARE, almost always $0. For TRICARE-only services, you owe a small deductible plus a percentage cost-share until you hit the annual catastrophic cap.
- How much does Medicare Part B cost?Most people pay the standard Part B premium (roughly $185/month in 2026). Higher-income retirees pay IRMAA on top. Lower-income retirees may qualify for help paying it.
- Who pays first, Medicare or TRICARE For Life?Medicare pays first for any service it covers. TFL pays second. The claim usually crosses over automatically — you should never pay out of pocket up front.
Related glossary terms
Related Official Resources
Continue learning straight from the source. Every link below goes to an official government or DoD resource.
Last reviewed January 2026 against the 2026 Medicare & You and TRICARE For Life handbooks.