Confused About the Difference Between Part B and Part D Drug Coverage?

A question we get a lot from our clients:

“I understand that Part D is prescription drug coverage.  But I know Part B covers some medications too.  How do I know which medications are covered under which Part?”

This is a valid question!  It’s always nice to know where your monthly premiums are going and what they’re covering.

To help simplify things and make them memorable, let me propose a little pneumonic device:

Part B = Bedside (these are drugs that are usually administered bedside, like at a doctor’s office or an infusion center.  Sometimes they are administered by durable medical equipment that has been covered under Part B, i.e., insulin via a Part B-issued insulin pump)

Part D = DIY (Part D covers what most people think of when they think of an Rx: a bottle you pick up from the pharmacy and take at home – no need for a physician administering here).

I’ll give some examples of each:

Part B Covered Medications:

  • Vaccinations (Full list HERE)
  • Some antigens
  • Blood clotting factors
  • Injectable and infused drugs
  • Injectable osteoporosis drugs
  • Oral end-stage renal disease drugs
  • Transplant and immunosuppressive drugs
  • Drugs used with an item of durable medical equipment 
  • Oral Cancer Drugs
  • Insulin
  • The new Alzheimer’s drug, Leqembi 

Part D Covered Medications (all Part D plans must cover at least two drugs from most categories and at least two for each of these categories):

  • HIV/AIDS treatments.
  • Antidepressants.
  • Antipsychotic medications.
  • Anticonvulsive treatments for seizure disorders.
  • Immunosuppressant drugs.
  • Anticancer drugs (unless covered by Part B)

Of course, each Part D plan has its own formulary (a.k.a. list of drugs it covers).  It is helpful to reach out to an agent if you need help finding a Part D plan that covers the drugs you need at the most competitive price.

I hope this was helpful to you!  Remember, Part B covers drugs administered Bedside (physician-administered) and Part D covers drugs that are DIY (you take yourself).

Posted in Medicare.

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