Prescription drug coverage under TRICARE For Life

Prescription coverage is one of the simplest parts of TFL — once you understand the four channels and avoid the one big mistake (enrolling in Part D).

This lesson walks through how the TRICARE Pharmacy Program works, why it replaces Part D, and how to choose the right channel for each prescription.

The four pharmacy channels

Specific copays vary by year and tier (generic, brand, non-formulary). The 2026 TFL Handbook publishes the exact numbers — they typically run from $0 to under $20 per prescription for the average user.

Why not Medicare Part D?

Medicare Part D is private prescription drug coverage sold by insurance companies. For most Americans it's essential — but TFL beneficiaries already have better drug coverage through Express Scripts.

Reasons to avoid Part D:

• TRICARE Pharmacy is creditable. SSA officially recognizes it as equivalent to or better than Part D, so you face no late-enrollment penalty.
• Coordination problems. Layering a Part D plan on top of Express Scripts often causes pharmacy billing confusion.
• No financial benefit. Part D adds a monthly premium for coverage you already have.
• TRICARE formulary is broad. Most common drugs are well-covered.

The TFL Handbook is explicit: TRICARE Pharmacy is your drug coverage. Do not add Part D unless a specific clinical situation requires it.

Choosing the right channel

Use MTF pharmacy when

• You take maintenance medications (blood pressure, statins, thyroid, etc.)
• You live close enough to make the trip practical
• The medication is on the MTF formulary

Use Express Scripts home delivery when

• You take maintenance medications and don't live near an MTF
• You want medications mailed automatically every 90 days
• You're traveling and need refills before a trip

To set up home delivery: register at militaryrx.express-scripts.com or call Express Scripts.

Use retail network pharmacies when

• You need a new prescription filled quickly (antibiotic, post-surgical pain medication)
• You're traveling and run out of a medication
• You only need a 30-day supply

Network pharmacies include most major chains: CVS, Walgreens, Rite Aid, Walmart, Kroger, and thousands of independents. Use the pharmacy locator at express-scripts.com.

Use non-network pharmacies only when

• No network pharmacy is available
• You're in a medical emergency

You will pay the highest copay and often pay up front, then file for reimbursement.

Formulary basics

The TRICARE formulary classifies drugs into tiers:

• Generic — lowest cost; usually the first option
• Brand-name formulary — moderate cost; preferred brand
• Non-formulary — highest cost; usually requires prior authorization or step therapy

If a doctor prescribes a non-formulary drug, ask whether a generic or formulary alternative would work. The savings can be significant.

Special situations

Hospital-administered drugs

Drugs given to you while admitted to a hospital are covered under Medicare Part A, not TRICARE Pharmacy. You don't fill these prescriptions yourself.

Drugs from VA doctors

Prescriptions written by VA doctors are typically filled through VA pharmacies, not Express Scripts. VA prescriptions are separate from your TRICARE Pharmacy benefit.

Specialty medications

Some high-cost specialty medications (biologics, oncology drugs) must be filled through Express Scripts' specialty pharmacy. Call Express Scripts to confirm before your prescription is written.

Overseas

TRICARE Pharmacy covers prescriptions overseas through the TRICARE Overseas Program — see the TFL Handbook chapter for the specific process.

Common mistake: Enrolling in a Medicare Advantage plan that includes Part D and forgetting that this can disrupt the Express Scripts pharmacy benefit. If you are considering MA, ask a licensed specialist how the plan's Part D component interacts with TRICARE Pharmacy.

Continue learning

— suggested by the knowledge graph

Lessons

• Frequently asked questions about Medicare and TRICARE For LifeA quick-reference summary of the questions retired service members and spouses ask most often — with citations to the official source.
• Common mistakes retired military make at 65 — and how to avoid themThe most expensive errors retired service members and spouses make during the Medicare and TFL transition, and the simple fixes for each.
• What is Medicare? A complete overview for retired militaryA plain-English, handbook-grounded overview of the federal health insurance program for people 65 and older, written specifically for retired service members and their families.
• 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.

Encyclopedia

• Medicare Part AThe hospital insurance side of Original Medicare — covers inpatient stays, skilled nursing, hospice, and some home health.
• Medicare Part C (Medicare Advantage)An optional, all-in-one alternative way to get your Medicare benefits — delivered through a private plan instead of through Original Medicare.
• Medicare Part DMedicare's optional prescription drug coverage — almost always unnecessary if you have TRICARE For Life.
• TRICARE For Life (TFL)The wraparound secondary health coverage for Medicare-eligible military retirees, spouses, and survivors — no premium, no enrollment fee.
• DEERSThe DoD's master database that determines who is eligible for TRICARE — including TRICARE For Life.
• Creditable CoverageNon-Medicare coverage that CMS deems at least as good as a standard Medicare Part D plan — TRICARE Pharmacy qualifies, so TFL beneficiaries don't need Part D.
• TRICARE Pharmacy ProgramThe DoD prescription drug benefit administered by Express Scripts — your drug coverage if you have TFL.
• 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.
• TFL Overseas CoverageOutside the U.S., TFL becomes the primary payer because Medicare generally doesn't pay overseas.
• MedicareThe federal health insurance program for people 65+, certain younger people with disabilities, and people with ESRD or ALS.

FAQs

• Should I enroll in Medicare Part D?No, for almost every TFL beneficiary. TRICARE Pharmacy (Express Scripts) is creditable coverage and cheaper than most Part D plans. Adding Part D usually costs more without adding benefit.
• Should I enroll in a Medicare Advantage plan that includes Part D (MAPD)?Only if the MA plan otherwise makes sense for you. The Part D piece duplicates TRICARE Pharmacy — but you keep TRICARE Pharmacy as a fallback. Don't enroll just for the drug coverage.
• What is 'creditable coverage' for Part D?Drug coverage that's at least as good as standard Part D. TRICARE Pharmacy is creditable, so you can skip Part D without owing a late-enrollment penalty later.
• What are the TRICARE Pharmacy copays for retirees?MTF pharmacy: $0. Home Delivery (90-day): low. Retail network (30-day): higher. Non-network: highest and requires a paper claim. Exact amounts adjust annually.
• What if my drug isn't on the TRICARE formulary?Non-formulary drugs cost more. Your doctor can request a medical-necessity exception so it's covered at the formulary copay.
• How do I get prescriptions filled while traveling?Use any in-network retail pharmacy (CVS, Walgreens, Kroger, etc.) — they're in the Express Scripts network nationwide. For long trips, request a vacation override.