Medicare Part A and Part B Start After 24 Months on SSDI
When you receive SSDI payments for 24 consecutive months, you become covered by Medicare Part A (hospital insurance) and Medicare Part B (medical insurance) automatically. You do not have to explore separately or pay a separate enrollment fee to start this coverage — Social Security handles the enrollment and your coverage begins on the first day of the 25th month.
This automatic enrollment happens regardless of your age. Unlike most people who become may be able to access for Medicare at 65, SSDI recipients can receive Medicare as early as their late 20s or 30s if they have been receiving SSDI payments for two years. The two-year waiting period is built into the SSDI program itself; it is not something you can shorten or waive.
Your Medicare card will arrive in the mail before your coverage starts. If you do not receive it within a few weeks of your 24-month mark, contact Social Security to confirm your address is correct in their system.
Key Takeaways
- Medicare Part A and Part B coverage begins automatically after you receive SSDI for 24 consecutive months, with no separate process required.
- Part A covers hospital stays, skilled nursing facility care, and hospice; Part B covers doctor visits, outpatient services, and some preventive care.
- You pay a monthly premium for Part B (the amount depends on your income and changes yearly), and Part A is free for most SSDI recipients.
- You can add prescription drug coverage (Part D) and supplemental coverage (Medigap or Medicare Advantage) after your Part A and Part B coverage begins.
- If you return to work and your SSDI payments stop, your Medicare coverage continues for at least 93 more months, giving you time to find other insurance.
What Part A Covers
Medicare Part A is hospital insurance. It covers inpatient hospital stays (when you are admitted and stay overnight), skilled nursing facility care after a hospital stay, home health services ordered by a doctor, and hospice care. Part A does not cover outpatient doctor visits, prescription drugs, or routine preventive care — those fall under Part B or other coverage.
When you use Part A, you pay a deductible for each hospital stay (the amount changes yearly and is set by Medicare each October). After you meet the deductible, Medicare covers most of the cost of your hospital care. If your hospital stay is very long, you may owe copayments for days beyond a certain number, but this is rare and the amounts are set by Medicare.
Part A is free for most SSDI recipients. You do not pay a monthly premium. If you worked long enough before becoming disabled to have earned enough Social Security credits, you may have access to for free Part A. If you did not work long enough, you may have to pay a monthly premium, but Social Security will tell you during the enrollment process if this applies to you.
What Part B Covers
Medicare Part B is medical insurance for outpatient care. It covers doctor visits (in person or telehealth), lab tests and imaging (X-rays, ultrasounds, CT scans), outpatient surgery, mental health services, physical therapy, and some preventive care like cancer screenings and vaccinations. Part B does not cover prescription drugs filled at a pharmacy — that is Part D.
Part B requires a monthly premium. The standard premium amount changes each year; in recent years it has ranged from roughly $165 to $175 per month for most beneficiaries, but the exact amount depends on your income from the previous two years. If your income is higher, you may pay more. Social Security will deduct your Part B premium directly from your SSDI payment each month.
After you pay your Part B premium, you also pay a yearly deductible (currently $226, though this changes yearly). Once you meet the deductible, you typically pay 20% of the cost of covered services, and Medicare pays 80%. Some services like preventive care have no copayment.
Prescription Drug Coverage (Part D) and Supplemental Plans
Medicare Part A and Part B do not cover prescription drugs. To get drug coverage, you must enroll in Medicare Part D (prescription drug coverage) through a private insurance company that contracts with Medicare. You can enroll in Part D during your initial enrollment period (which starts when you become may be able to access for Medicare) or during the annual open enrollment period each fall.
Part D plans vary in cost and which drugs they cover. You pay a monthly premium for the plan you choose, and you also pay copayments or coinsurance when you fill prescriptions. If you do not enroll in Part D when you first become may be able to access and you go without drug coverage for more than 63 days, you may have to pay a permanent penalty when you do enroll.
You can also add supplemental coverage (called Medigap) or choose a Medicare Advantage plan (Part C) instead of traditional Medicare. These are optional and come from private insurers. Medigap helps pay the costs that traditional Medicare does not cover (like copayments and deductibles). Medicare Advantage is an alternative to traditional Medicare that often includes drug coverage and other services. You do not have to choose either one, but many people do to reduce their out-of-pocket costs.
What Happens to Your Medicare if You Return to Work
If you return to work and your SSDI payments stop, your Medicare coverage does not stop when ready. You keep Medicare Part A and Part B for at least 93 more months (about 7.75 years) after your SSDI payments end, even if you do not pay premiums during that time. This is called the Medicare continuation period.
During this continuation period, you can keep your coverage without paying Part B premiums for the first 8 months after your SSDI ends. After those 8 months, you must pay the Part B premium if you want to keep Part B coverage. Part A remains free during the entire 93-month period if you may have access to for free Part A when you started SSDI.
This continuation period gives you time to find other insurance through an employer or the health insurance marketplace. When the 93 months end, you can enroll in regular Medicare if you are 65 or older, or you will need to find other coverage.
Costs You Should Know About
The table below shows the main costs associated with Medicare when you receive SSDI. These amounts change yearly, usually in October, and the amounts shown here are examples based on recent years. Your actual costs may differ.
| Coverage Type | Monthly Premium | Yearly Deductible | Your Cost After Deductible |
|---|---|---|---|
| Part A (Hospital) | Free for most | ~$1,600 per stay | Copayments for long stays |
| Part B (Doctor/Outpatient) | ~$165–$175 | ~$226 | 20% of covered services |
| Part D (Drugs) | Varies by plan | Varies by plan | Copayments per prescription |
If your income is low, you may be able to get help paying these costs through programs like Medicaid (which varies by state) or the Medicare Savings Program. Your state Medicaid office or local Social Security office can tell you whether you may have access to.
Frequently Asked Questions
Do I have to do anything to get Medicare when I hit 24 months on SSDI?
No. Social Security automatically enrolls you in Medicare Part A and Part B. Your card will arrive in the mail before coverage starts. You do not need to call, explore, or take any action. If you do not receive your card, contact Social Security to verify your mailing address.
Can I turn down Medicare Part B and keep only Part A?
Yes, you can decline Part B enrollment. You would send a written request to Social Security. However, if you decline and later want Part B, you may have to pay a permanent penalty on your premium. Most people keep Part B because the penalty usually costs more than the premium itself over time.
What if I cannot afford the Part B premium?
If your income is very low, you may may have access to for the Medicare Savings Program, which helps pay Part B premiums and other costs. Contact your state Medicaid office or local Social Security office to see if you may have access to. Some states also have other programs that help with Medicare costs.
Does Medicare cover dental, vision, or hearing?
Traditional Medicare Part A and Part B do not cover routine dental, vision, or hearing services. Some Medicare Advantage plans include these benefits, so if these services matter to you, compare Medicare Advantage plans in your area during open enrollment. You can also buy separate dental or vision insurance on your own.
What if I move to another state after I get Medicare?
Your Medicare coverage works the same in every state. You can use your Medicare card at any hospital, doctor, or pharmacy that accepts Medicare, regardless of where you live. If you move, update your address with Social Security so your bills and notices go to the right place.