The main routes to Medicare coverage

You can get Medicare in three main ways: by reaching age 65, by receiving Social Security Disability Insurance (SSDI) for 24 months, or by having end-stage renal disease (ESRD) or ALS. Most people enter through age 65. If you are not yet 65 but have been on SSDI for two years, you move to Medicare automatically. If you have ESRD or ALS, you may be able to start Medicare sooner, regardless of age.

The path you take affects when your coverage starts and what paperwork you need. Understanding which route applies to you helps you know when to expect your card and what to do if something goes wrong.

Key Takeaways

  • You become may be able to access for Medicare at age 65 if you or your spouse paid Medicare taxes for at least 10 years (40 quarters) while working.
  • If you receive SSDI, you move to Medicare automatically after 24 months on disability, regardless of your age.
  • People with end-stage renal disease or ALS can start Medicare at any age, sometimes when ready after diagnosis.
  • You must sign up during your enrollment window or face late penalties on your premiums, even if you are still working.
  • If you do not have 10 years of work history, you may still be covered through a spouse's or ex-spouse's record.

Medicare at age 65: the work history requirement

The most common path is turning 65. To be covered, you or your spouse must have paid Medicare taxes for at least 10 years (40 quarters) during your working life. You do not have to have worked those 10 years in a row, and you do not have to have worked recently. If you worked in covered employment at any point and paid in for 40 quarters total, you meet this requirement.

If you are not yet 65 and do not fall into the SSDI or ESRD/ALS categories, you cannot get Medicare, even if you are retired or not working. You would need to look at other coverage options until you reach 65.

Your work history is tied to your Social Security record. You can check your record online at ssa.gov or by calling Social Security at 1-800-772-1213 to confirm you have 40 quarters of coverage.

Automatic coverage through SSDI after 24 months

If you are receiving SSDI (Social Security Disability Insurance), you become may be able to access for Medicare after you have been on disability for 24 months. You do not need to reach 65 or meet any other condition. Medicare starts automatically in the 25th month of your SSDI benefit.

You will receive your Medicare card in the mail before your coverage begins. You do not need to sign up separately. If you do not receive your card about a month before your coverage date, contact Social Security at 1-800-772-1213.

This rule applies whether you became disabled at 30 or 60. The 24-month waiting period is set by law and cannot be waived, but once it passes, your transition to Medicare is automatic.

Medicare for people with end-stage renal disease or ALS

If you have end-stage renal disease (ESRD) requiring dialysis or a kidney transplant, you can start Medicare at any age. Coverage usually begins the first day of the month in which your dialysis treatment starts, or the month of your transplant. If you are already on dialysis when you turn 65, you do not lose coverage—you straightforward continue.

If you have ALS (amyotrophic lateral sclerosis), you become may be able to access for Medicare when ready upon approval of your SSDI claim, without waiting the usual 24 months. You do not need to reach 65.

For ESRD, you will need to provide medical documentation of your condition to Medicare. Your dialysis center or transplant team can help you with this. For ALS, Social Security will notify Medicare of your approval, and your coverage begins automatically.

Coverage through a spouse or ex-spouse's record

If you do not have 10 years of your own work history, you may still be covered at 65 through your spouse's record if they have 40 quarters of coverage. You can also be covered through an ex-spouse's record if you were married for at least 10 years, are at least 62 years old, and are not currently married (or are married to someone who is also covered through an ex-spouse's record).

You do not need your spouse's or ex-spouse's permission to use their record. Social Security will check automatically when you reach 65. If you are unsure whether you may have access to, call Social Security at 1-800-772-1213 and ask them to review your options.

When to sign up and what happens if you miss the important date

You should sign up for Medicare during your Initial Enrollment Period, which runs for seven months: three months before the month you turn 65, the month you turn 65, and three months after. If you sign up during this window, your coverage starts on the first day of the month you turn 65.

If you miss this window and do not have coverage through an employer, you will face a late enrollment penalty. This penalty is added to your Part B premium for as long as you have Medicare. The penalty is 10 percent of the standard Part B premium for each full year you were not signed up. If you were supposed to sign up three years ago and did not, your penalty would be 30 percent of the current premium, added to your bill every month.

There is one exception: if you or your spouse are still working and covered by an employer health plan, you can delay signing up without penalty. When you or your spouse stops working or lose that coverage, you have eight months to sign up without a late penalty. You will need to show proof of your employer coverage when you sign up.

How to confirm your may be able to access before you turn 65

You do not have to wait until you are close to 65 to check your status. You can create an account on ssa.gov and view your Social Security record, which shows your quarters of coverage. This takes about 15 minutes and gives you a clear picture of whether you meet the 40-quarter requirement.

If your record shows fewer than 40 quarters, you can still work and add more quarters before you turn 65. Each year you work in covered employment adds up to four quarters. If you are short by a few quarters, working another year or two may get you there.

If you have questions about your record or think there is an error, call Social Security at 1-800-772-1213. They can review your work history and tell you exactly how many quarters you have and what you need to do next.

Frequently Asked Questions

Can I get Medicare before age 65 if I am retired?

No, unless you are on SSDI (after 24 months), have ESRD, or have ALS. Retirement alone does not make you may be able to access. If you are not yet 65 and do not fall into one of these categories, you will need other coverage until you reach 65.

What if I worked outside the United States?

Work outside the U.S. generally does not count toward Medicare coverage unless you worked for the U.S. government or a U.S. employer. If you worked in another country, Social Security can review your record to see if any of that work counts. Call 1-800-772-1213 to discuss your specific situation.

Do I lose Medicare if I go back to work after turning 65?

No. Once you are on Medicare, you keep it regardless of whether you work. Your coverage does not change based on income or employment status after age 65.

If I am on SSDI, do I have to do anything to switch to Medicare after 24 months?

No. The switch happens automatically. You will receive your Medicare card in the mail about a month before your coverage begins. You do not need to sign up or take any action.

What if my spouse is may be able to access but I am not?

Your spouse can sign up for Medicare at 65 based on their own work history. You can sign up at 65 based on their record if you were married for at least two years (or one year if one of you is already on Social Security). Call Social Security to discuss your options.