The cost of multiple sclerosis (MS) drugs and services is covered by various sections of original Medicare, Part D, and Part C, or Advantage, plans.

MS is a chronic condition that affects the central nervous system. Nearly 1 million people older than 18 have a diagnosis of MS in the United States. Globally, more than 2.3 million people have diagnosed MS.

In this article, we look at the symptoms of MS, then describe coverage provided by:

  • original Medicare, or parts A and B
  • Part C, known as Medicare Advantage
  • Part D
  • Medigap plans

We also compare the costs.

We may use a few terms in this piece that can be helpful to understand when selecting the best insurance plan:

  • Deductible: This is an annual amount that a person must spend out of pocket within a certain time period before an insurer starts to fund their treatments.
  • Coinsurance: This is a percentage of a treatment cost that a person will need to self-fund. For Medicare Part B, this comes to 20%.
  • Copayment: This is a fixed dollar amount that an insured person pays when receiving certain treatments. For Medicare, this usually applies to prescription drugs.
a packet of ms drugs that a person will have cover for with medicareShare on Pinterest
Certain Medicare plans provide coverage for MS drugs.

MS targets the nervous system and may harm the optic nerves, spinal cord, and brain.

The disease slows or stops messages between the brain and other parts of the body. Symptoms vary, depending on the affected areas, and they change over time.

MS symptoms may include:

  • fatigue
  • numbness or tingling in the arms and legs
  • vision problems
  • weakness
  • depression
  • memory problems
  • poor balance and coordination

Different types

There are four types of the disease, including:

  • clinically isolated syndrome, the first episode of MS
  • relapsing-remitting MS
  • secondary progressive MS
  • primary progressive MS

Doctors do not know what causes the disease, though it may be triggered by the immune system.

MS affects more females than males, and doctors typically diagnose it in people aged 20–40 years old.

The disease does not tend to cause severe disability, and it is not known to cause paralysis. However, MS-related conditions or complications can shorten a person’s life by up to 7 years.

Though there is no cure for the disease, there are treatments, and receiving these early on can reduce the impact of MS in the long term.

The effects of MS depend on the areas of the body involved, and the symptoms can change over time. Therefore, the need for Medicare coverage can also change, involving different parts of Medicare at different times.

Original Medicare

Original Medicare includes parts A and B.

Part A covers care in hospitals, hospices, and skilled nursing facilities, including the medications and therapies involved during these stays.

Part B covers many professional services and treatments that a person with MS might need, including medication provided in a doctor’s office.

Part B also covers medically necessary durable medical equipment that a person with MS might need in their home, such as:

  • cushions or mattresses that help relieve pressure
  • aids for using the toilet
  • canes
  • walkers
  • wheelchairs
  • mobility scooters

Medicare Advantage

Also known as Part C, these plans are alternatives to original Medicare, and they provide the same coverage.

Some offer additional benefits, such as:

  • physical, occupational, or speech therapy
  • eye care
  • hearing care
  • dental care
  • wellness programs, such as gym memberships

One key difference is that Part C, or Advantage, plans are provided by private companies, and a person must use doctors, pharmacies, and providers within the plan’s network.

Medicare Part D

Part D plans are designed to cover prescribed medications, including many for MS. A person purchases one of these plans separately.

Each Part D plan has a list, called a formulary, of covered medications. These medications are grouped by price.


Medigap plans are designed to cover out-of-pocket costs, including deductibles, copays, and coinsurance.

Each of the 10 Medigap plans has a premium to pay. However, a person with MS may find that the additional coverage saves them money in the long term.

This online tool can help a person find a plan that best suits their needs.

Because a person with MS may require coverage from different parts of Medicare at different times, the costs can vary considerably.

The table below shows the basic costs of each Medicare part.

Medicare partCost
Part A The premium is generally free. But if a person meets certain requirements, their premium may be $252–458 per month.

The deductible is $1,408, and coinsurance depends on the number of days involved.
Part BThe basic premium is $144.60, with a deductible of $198.

After the person meets the deductible, the cost of coinsurance is generally 20%.
Part CThe premium depends on a person’s plan.
Part DPremiums vary between plans.

A person can use this online tool to compare the costs of plans C and D.

Original Medicare, Medigap, Part D, and Part C — or Advantage — plans each cover various costs associated with MS care, including costs of medications.

Because the symptoms of MS can change over time, a person may need coverage for visits to the doctor, in-hospital services, tests, therapies, and medications.