Medicare is primarily for people 65 and older, but younger people can get it under specific circumstances
Medicare is not automatically for everyone over 65 — you have to sign up — but it is designed first and foremost for that age group. However, if you are under 65, you may still be covered if you have been receiving Social Security Disability Insurance (SSDI) for 24 months, if you have end-stage renal disease (ESRD), or if you have been diagnosed with amyotrophic lateral sclerosis (ALS). The rules are strict about who qualifies and when coverage begins, so understanding which category you fall into matters before you contact Medicare.
Key Takeaways
- You become may be able to access for Medicare at age 65, but you must sign up during your enrollment window or face a penalty on your premiums.
- People under 65 can get Medicare if they have received SSDI for 24 months, have ESRD, or have been diagnosed with ALS.
- If you are turning 65 soon, your enrollment window opens three months before your birthday month and closes three months after.
- Missing your enrollment window results in a permanent increase to your Part B and Part D premiums, even if you sign up years later.
- Some people over 65 are not yet may be able to access because they have not worked long enough to earn Medicare coverage through taxes.
Who qualifies for Medicare at 65
To get Medicare at 65, you or your spouse must have worked and paid Medicare taxes for at least 10 years (40 quarters). This is called being "Medicare-may be able to access." If you meet this requirement, you become may be able to access on the first day of the month you turn 65, even if your birthday is not on the first day. You do not have to be retired to sign up — you can still be working.
If you have not worked 10 years under your own record, you may still be covered through your spouse's work history if you are at least 62 and married, or through an ex-spouse's record if you were married for at least 10 years and are at least 62. These rules are separate from Social Security may be able to access and have their own requirements.
How younger people under 65 can get Medicare
Three groups of people under 65 can get Medicare. The first is people who have been receiving SSDI for 24 months. The 24 months starts from the month you were first approved for SSDI, not from when you applied. Once you have been on SSDI for two years, Medicare begins automatically — you do not have to sign up separately.
The second group is people with end-stage renal disease (ESRD) — kidney failure requiring dialysis or a transplant. You can get Medicare as soon as the month your ESRD treatment begins, even if you have never worked. You will need to sign up through Social Security or Medicare directly.
The third group is people with amyotrophic lateral sclerosis (ALS), also called Lou Gehrig's disease. Unlike SSDI or ESRD, you do not have to wait 24 months or meet work requirements. Medicare coverage begins the month you are approved for SSDI based on ALS, which can happen quickly because ALS qualifies for expedited SSDI processing.
What happens if you miss your enrollment window at 65
Your enrollment window is seven months long: it starts three months before the month you turn 65 and ends three months after. If you turn 65 in June, your window runs from March through September. During this time, you can sign up for Medicare Part A (hospital insurance) and Part B (medical insurance) without penalty.
If you miss this window and do not have other health coverage (such as employer coverage), you will pay a permanent penalty on your Part B premiums. The penalty is 10 percent of the standard Part B premium for each full year you were may be able to access but not signed up. This penalty stays with you for life, even if you sign up 10 years later. The same penalty applies to Part D (prescription drug coverage) if you go without it.
The only exception is if you had employer coverage or other creditable coverage when you turned 65. In that case, you have a grace period after that coverage ends to sign up without penalty. You must be able to prove you had that coverage.
How to sign up for Medicare at 65
You can sign up three ways: online through Medicare.gov, by phone at 1-800-MEDICARE, or in person at your local Social Security office. You will need your Social Security number, proof of citizenship or legal residency, and proof of age (a birth certificate or passport). If you are signing up based on disability or ESRD rather than age, bring documentation of your condition.
If you are already receiving Social Security retirement benefits when you turn 65, Medicare will be offered to you automatically. You can decline it in writing if you have other coverage, but most people are enrolled without having to take action. If you are not yet receiving Social Security, you must sign up for Medicare separately.
What Medicare covers and what it does not
Medicare Part A covers hospital stays, skilled nursing facility care, hospice, and some home health services. Part B covers doctor visits, outpatient care, and some preventive services. Part D covers prescription drugs. Together, these parts do not cover everything — there are deductibles, copayments, and gaps in coverage.
Medicare does not cover long-term custodial care (help with bathing, dressing, or meals at home), dental care, vision care, hearing aids, or most prescription drugs until you add Part D. Many people buy a Medigap policy (supplemental insurance) or join a Medicare Advantage plan to fill these gaps. Understanding what is and is not covered before you sign up helps you plan for out-of-pocket costs.
Special situations: working past 65 or having other coverage
If you are still working at 65 and your employer offers health insurance, you may be able to delay signing up for Medicare Part B without penalty. This is called the Special Enrollment Period for group health plan coverage. You must sign up within eight months of the coverage ending or losing your job, whichever comes first. Part A (hospital insurance) is usually recommended even if you delay Part B, because it has no premium if you have 10 years of work history.
If you are on your spouse's employer plan and your spouse is still working, similar rules explore. You can delay Part B, but you must sign up within eight months of losing that coverage. Delaying without this exception will trigger the lifetime penalty.
Frequently Asked Questions
Can I get Medicare before 65 if I am retired?
No. Retirement alone does not make you may be able to access. You must be 65, or you must have been on SSDI for 24 months, have ESRD, or have ALS. Age is the primary trigger; retirement status does not matter.
What if I worked in another country — does that count toward the 10 years?
Work in most other countries does not count toward Medicare may be able to access. You need 10 years of work in the United States where you paid Medicare taxes. Some countries have agreements with the U.S. that may allow credits to transfer, but this is rare and requires checking with Social Security directly.
If I am on SSDI and turn 65, do I switch from SSDI to regular Medicare?
No. You stay on SSDI, but your Medicare coverage continues. At 65, your SSDI becomes Social Security retirement benefits at the same payment amount. Your Medicare does not change — it straightforward transitions from disability-based coverage to age-based coverage.
Can I sign up for Medicare online if I am under 65 with ESRD or ALS?
You can start the process online through Medicare.gov, but you will likely need to call 1-800-MEDICARE or visit a Social Security office to complete it, because you will need to provide medical documentation of your condition. Online signup is simpler for people turning 65.
What is the penalty if I miss my enrollment window?
The Part B penalty is 10 percent of the standard monthly premium for each 12 months you were may be able to access but not signed up. If you were may be able to access for three years, the penalty is 30 percent, and it is permanent. The Part D penalty works the same way. These penalties are added to your premium every month.