If you left your job because of a disability, COBRA can keep your employer's health plan going for longer than the usual 18 months. A federal rule called the disability extension can stretch it to 29 months, which lines up closely with the wait for Medicare. But it has strict notice deadlines, and missing one can cost you the extra months. This page explains who qualifies, what it costs, how to ask for it, and how it ends. For the bigger picture, see our guide to health insurance until Medicare starts.

What is the COBRA disability extension?

It extends COBRA from 18 months to 29 months when Social Security finds you disabled early in your COBRA coverage.

COBRA lets you keep your employer's group plan after you lose it, usually for 18 months, by paying the cost yourself. Under federal rules, the maximum can stretch to 29 months if you qualify for the disability extension.

Why it matters: Social Security Disability Insurance (SSDI) has a 5-month waiting period, and Medicare starts in your 25th month of benefits. That adds up to roughly 29 to 30 months from when your disability began, so the extension can carry you most or all of the way to Medicare.

Who qualifies for the 29-month extension?

You qualify if all of these are true:

  • Your COBRA came from losing your job or having your hours cut.
  • Social Security determines that you, or someone in your family on the plan, were disabled at some point during the first 60 days of COBRA. The decision itself can come later.
  • The disability continues through the rest of the original 18 months.
  • You notify the plan on time (see below).

Federal COBRA generally applies to employers with 20 or more employees. Smaller employers may be covered by state continuation rules instead, which are shorter in South Carolina and Tennessee. See health insurance until Medicare starts for each state's rules.

How do I ask for the extension?

Send the plan a copy of your Social Security disability decision within 60 days of the date it's issued, and before your first 18 months of COBRA run out.

Federal rules require the notice within 60 days after the determination is issued and before the end of the original 18-month period. The plan's own notice procedures, found in its documents, tell you where and how to send it. Steps that help:

  1. Elect COBRA on time. You have at least 60 days to elect it, counted from the later of the day your coverage ends or the day you get the COBRA notice.
  2. Apply for SSDI as early as you can, so a decision is more likely to arrive before your 18 months end.
  3. Send the award letter to the plan immediately when it arrives, in writing, following the plan's notice rules. Keep proof of when you sent it.
  4. Keep paying premiums on time throughout.

How much does COBRA cost during the extension?

Up to 150% of the plan's cost during the extra 11 months, for months that include the disabled person.

During the first 18 months, a plan can charge up to 102% of its cost. During the disability extension, it can charge up to 150% for any month of coverage that includes the disabled person. If you're weighing COBRA against other options, compare the full monthly cost with a Marketplace plan and with Medicaid where you live. See COBRA vs. Marketplace.

Does the extension cover my family?

Yes. The 29 months apply to each qualified beneficiary in the family, including those who aren't disabled.

When does the extension end?

  • At 29 months from the qualifying event, at the latest.
  • If Social Security decides you're no longer disabled, the extension can end on the first day of the month that's more than 30 days after that final determination, if that comes sooner.
  • When Medicare starts, if you became entitled to Medicare after electing COBRA, the plan is allowed to end your COBRA. If your Medicare was already in effect on or before the day you elected COBRA, Medicare can't be the reason it ends.
  • If premiums aren't paid on time, or the employer stops offering any group health plan.

How do I move from COBRA to Medicare?

Know your Medicare start date and plan the handoff before it arrives. Your Medicare card comes about 3 months before coverage starts. Check with the plan what happens to anyone else in your family on COBRA when your Medicare begins. Choose drug coverage during your 7-month Medicare window. Whether you can delay Part B without a late-enrollment penalty depends on your specific situation, including whether you have group health coverage based on your own or your spouse's current employment. Employer size can also affect how Medicare coordinates with that coverage, so we check the details before you decide. Medicare.gov notes that COBRA isn't considered group health plan coverage for that purpose. See what to do when your Medicare card arrives.

Mistakes we see people make

  • Missing the 60-day notice after Social Security approves SSDI.
  • Not sending the notice in writing, or without proof of when it was sent.
  • Letting COBRA lapse while waiting for the SSDI decision.
  • Turning down Part B because of COBRA, which doesn't count as current-employment coverage.
  • Not comparing costs once the premium can rise to 150%.

How The Jordan Insurance Agency helps

A licensed agent from The Jordan Insurance Agency will compare COBRA with Marketplace and Medicaid options for your doctors and prescriptions, flag your extension deadlines, and plan the handoff to Medicare so you aren't paying for two plans or left without one. We work by phone, by video, or in person at our office at 3540 Toringdon Way, Suite 200, Charlotte, NC 28277, Monday through Friday, 9 to 5 Eastern, at no cost to you. Call (704) 926-7565 or use the button below. You can also read our guide to Medicare under 65 on disability or browse our health insurance questions answered.

Frequently asked questions

How long can COBRA last if I'm disabled?

Up to 29 months instead of 18, if Social Security finds you were disabled during the first 60 days of COBRA, your COBRA came from losing your job or hours, and you notify the plan in time.

What is the deadline to tell my plan about my SSDI approval?

Within 60 days after Social Security's decision is issued, and before your original 18 months of COBRA end. Follow the notice steps in your plan documents.

Does COBRA cost more during the disability extension?

It can. During the extra 11 months, the plan can charge up to 150% of its cost for months that include the disabled person, compared with up to 102% during the first 18 months.

Can my family keep COBRA under the disability extension?

Yes. The 29-month maximum applies to every qualified beneficiary in the family on the plan, not only the person with the disability.

Does COBRA end when Medicare starts?

If you became entitled to Medicare after electing COBRA, the plan is allowed to end your COBRA then. If your Medicare was already in effect when you elected COBRA, Medicare can't be the reason your COBRA ends.

Reviewed and approved by Billy Jordan, Jr., licensed agent and President of The Jordan Insurance Agency.

Last reviewed: October 2026