Medications Covered Under Medicare Part B
- Diane Andree
- Jul 30, 2025
- 2 min read
Updated: Sep 3, 2025
If Lieutenant Columbo were investigating Medicare, he’d scratch his head, turn back at the door, and say: “Just one more thing…” ...and that thing would be:“Did you know not all medications are covered under Medicare Part D?”
That’s right. Some medications are actually covered under Medicare Part B — and if you don’t know which ones, you could be paying more than you need to.
🕵️♂️ What’s the Difference Between Part B and Part D Coverage?
Here’s the simple breakdown:
Part D is what most people think of for prescription drugs — pills you pick up at the pharmacy.
Part B is for drugs that are usually administered in a doctor’s office or clinic — think injections or infusions.
If Columbo were here, he’d pull out a pad and say: “Now let me get this straight… you’re telling me I don’t always need my Part D card to get my medicine?”
Exactly. Let’s take a closer look.
💉 Medications Typically Covered Under Part B
Here are some common examples:
1. Injectable or Infused Drugs
Given by a healthcare professional (not self-administered)
Examples: Chemotherapy drugs, immunosuppressants after a transplant, certain osteoporosis treatments
2. Vaccines Covered by Part B (Not D)
Flu shot
Pneumonia vaccine
Hepatitis B vaccine (for high-risk individuals)
COVID-19 vaccine
(Pro tip: Most other vaccines, like shingles, are under Part D.)
3. Medications Used with Durable Medical Equipment
Like nebulizer medications
IV medications given through a pump you use at home
4. Certain Anti-Cancer and Anti-Nausea Medications
If they’re part of a Medicare-approved treatment plan and administered properly, they may fall under Part B
🧾 Why Does This Matter?
Because if a medication is covered under Part B, it’s not billed to your Part D plan — and that could:
Lower your out-of-pocket costs
Help you avoid hitting the Part D coverage gap (“donut hole”)
Prevent delays in access to treatment
Plus, Part B drugs may be covered at 80% after your deductible, with a Medigap plan picking up the rest — meaning $0 cost to you in some cases.
🕵️♀️ Still Unsure? Let’s Investigate Together.
Not sure how your medication is covered? Or whether a drug should be billed through Part B instead of Part D?
📞 Call Diane Andree at ABC Medicare Plans Broker 631-337-3625





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