How SSDI and Medicare Work Together

When you receive Social Security Disability Insurance (SSDI), you become covered by Medicare automatically after you have been on SSDI for 24 months. This is not something you choose — it happens by rule. Medicare is the federal health insurance program for people over 65 and for some people under 65 who receive SSDI or railroad retirement benefits.

You do not pay a monthly premium for Medicare Part A (hospital insurance) because you have already paid into Social Security through payroll taxes during your working years. Part B (medical insurance) has a monthly premium that comes out of your SSDI check, and that amount changes each year. For 2024, the standard Part B premium is $164.90 per month, though some people pay more based on their income.

The 24-month waiting period starts from the month you are approved for SSDI, not from the month you became disabled. If you were denied and then approved on appeal, the 24 months counts from your approval date.

Key Takeaways

  • Medicare Part A (hospital insurance) costs you nothing because you paid into Social Security during work; Part B (doctor visits) has a monthly premium deducted from your SSDI payment.
  • You become covered by Medicare automatically 24 months after your SSDI approval, with no action needed on your part.
  • If you cannot afford the Part B premium, you can ask Social Security to reduce or waive it based on your income and resources.
  • You can choose to add Part D (prescription drug coverage) or a private Medicare Advantage plan, but these have separate costs and enrollment rules.
  • If you work and earn above a certain amount while on SSDI, you may lose your SSDI but keep Medicare for an additional period called Extended Medicare Coverage.

What Medicare Part B Costs and How It Comes Out of Your Check

The Part B premium is deducted directly from your SSDI payment each month. In 2024, most people on SSDI pay $164.90 per month, but the amount depends on your income from the previous two years. If your income was higher in those years, you pay a higher premium — this is called Income-Related Monthly Adjustment Amount (IRMAA). Social Security sends you a letter each year in October or November telling you what your Part B premium will be for the next year.

You also pay a yearly Part B deductible before Medicare starts to pay for doctor visits and outpatient services. For 2024, that deductible is $240. After you meet the deductible, you typically pay 20 percent of the cost for most doctor visits and tests.

If the Part B premium is too high for your budget, you can request a reduction or waiver by contacting Social Security. You will need to show that the premium causes you financial hardship. Social Security will review your current income and resources, not just your previous years' income. This process takes time, so contact them as soon as you know you cannot afford the premium.

What Happens Before Your 24 Months of SSDI Are Up

Before Medicare begins, you need health insurance. Some people stay on Medicaid, which is the joint federal-state program for low-income people. Medicaid rules vary by state — some states cover you automatically if you are on SSDI, while others require you to explore separately. Contact your state Medicaid office or call 211 to find out whether you are covered and what you need to do.

If you do not have Medicaid and cannot afford private insurance, you may be able to buy a plan through the Health Insurance Marketplace at healthcare.gov. You might receive a tax credit to lower the monthly premium if your income is low enough. Open enrollment normally runs from November through January each year, though you may be able to enroll outside those dates if you have a may have access to life event, such as losing other insurance.

Some people on SSDI have employer health insurance through a family member's job or through their own work. If that is your situation, you can keep that coverage while waiting for Medicare to start.

Prescription Drug Coverage and Other Costs

Once Medicare starts, you can add Part D (prescription drug coverage) during the enrollment period each year. Part D has its own monthly premium, which varies by plan and by pharmacy. You choose which plan to join, and the cost depends on which drugs you take — plans are ranked by their total cost to you for your specific medications.

You can also choose a Medicare Advantage plan (Part C) instead of traditional Medicare Part A and B. These are private insurance plans that cover hospital and doctor visits, often with lower out-of-pocket costs than traditional Medicare, but they usually have smaller networks of doctors and hospitals. Medicare Advantage plans often include Part D drug coverage. If you choose a Medicare Advantage plan, you still pay the Part B premium to Medicare, and then you pay the plan's premium on top of that.

Some people on SSDI with very low income may be covered by Extra Help, a federal program that pays Part D premiums and reduces out-of-pocket drug costs. You can explore through Social Security or at SSA.gov.

What Happens If You Work While on SSDI

SSDI has a work incentive called the Trial Work Period, which lets you work and earn money for nine months without losing your SSDI check. After the Trial Work Period ends, SSDI continues to pay you as long as your earnings stay below a certain amount, called Substantial Gainful Activity (SGA). For 2024, SGA is $1,550 per month for most people and $2,590 for people who are blind.

If your earnings go above SGA for nine months in a row, your SSDI stops. However, you do not lose Medicare when ready. You enter a period called Extended Medicare Coverage, which lasts for 93 months (about 7.5 years) after your SSDI ends. During this time, you can keep Medicare by paying the Part B premium yourself, even if you are working and earning a good income. This is a major reason people on SSDI can afford to try work — they know their health insurance will not disappear if they succeed.

Costs You Do Not Pay Through Medicare

Medicare does not cover dental, vision, or hearing aids. If you need these services, you have a few options. Some Medicaid programs cover dental and vision for adults on SSDI, depending on your state. You can also buy a separate dental or vision plan through the Marketplace, or you can look for community health centers that offer these services on a sliding fee scale based on income.

Medicare also does not cover long-term care, such as nursing home stays or in-home care. If you need these services, Medicaid may cover them, but rules vary widely by state. Contact your state Medicaid office to learn what is covered where you live.

How to Enroll in Medicare When Your 24 Months Are Up

You do not need to do anything to enroll in Medicare Part A and Part B — Social Security enrolls you automatically three months before your 24-month period ends. You will receive a Medicare card in the mail about two weeks before your coverage starts.

However, you do need to act if you want Part D (drug coverage) or a Medicare Advantage plan. You have a seven-month Initial Enrollment Period that starts three months before Medicare begins. If you miss this window, you may pay a penalty for the rest of your life when you eventually enroll. The penalty is 1 percent of the Part D premium for each month you were not covered, and it adds up.

To enroll in Part D or Medicare Advantage, visit Medicare.gov, call 1-800-MEDICARE, or visit your local Social Security office. You can also call your state's Health Insurance information Program (SHIP), which offers free help with Medicare choices.

Frequently Asked Questions

Do I have to take Medicare Part B when it starts?

If you are on SSDI, Part B is enrolled automatically and the premium is deducted from your check. You can refuse Part B, but this is rare and usually only makes sense if you have other insurance that covers the same services. If you refuse, contact Social Security in writing to document your choice.

What if I cannot afford the Part B premium?

Contact Social Security and ask for a premium reduction or waiver based on financial hardship. You will need to show your current income and resources. Social Security has a form (SSA-44) for this request. The process can take several weeks, so explore as soon as you know you cannot pay.

Can I keep Medicaid after Medicare starts?

Yes. In most states, you can have both Medicare and Medicaid at the same time. Medicaid can help pay your Medicare premiums and cover services Medicare does not, like dental and vision. This is called dual coverage. Contact your state Medicaid office to make sure you stay enrolled.

What happens to my insurance if I go back to work and lose SSDI?

You keep Medicare for 93 months (about 7.5 years) after SSDI ends, as long as you pay the Part B premium. This is Extended Medicare Coverage. After 93 months, you can buy coverage through the Marketplace or through an employer if you are still working.

Do I have to choose a Medicare Advantage plan, or can I stay with traditional Medicare?

You can choose either one. Traditional Medicare (Part A and B) is automatic. If you want a Medicare Advantage plan instead, you must enroll during your Initial Enrollment Period or during the annual enrollment period in the fall. You can switch back to traditional Medicare later if you change your mind.