Deadlines
Health Insurance Appeal Deadline: How Long Do You Have?
For most employer-sponsored (ERISA) plans, you have 180 days from the denial date to file an internal appeal. This deadline is set by 29 CFR § 2560.503-1(h)(3)(i) and runs from the date on your Explanation of Benefits — not from when you received it. ACA marketplace plans must provide at least 180 days as well. Missing this deadline can end your right to appeal regardless of the merits of your case.
Insurers do not remind you. The deadline is in the fine print of your denial letter, if it appears at all.
Where the deadline comes from
ERISA plans (employer-sponsored private plans):
29 CFR § 2560.503-1(h)(3)(i) requires that every ERISA health plan provide plan participants at least 180 days following receipt of a notification of an adverse benefit determination to appeal.
Plans may provide a longer window, but not shorter. If your plan documents specify a deadline shorter than 180 days, that provision is unenforceable under ERISA.
ACA plans (marketplace and individual plans):
45 CFR § 147.136 incorporates the 29 CFR § 2560.503-1 standards for internal appeals, including the 180-day minimum. Your ACA plan must give you at least 180 days.
Government and church plans:
ERISA does not apply to government employer plans or church plans. These plans set their own appeal procedures, though many mirror the ERISA standards voluntarily. Check your plan documents for the applicable deadline.
When the clock starts
The 180-day deadline runs from the date of the denial notice — typically the date on your Explanation of Benefits (EOB). The clock does not start when you received the EOB. Insurers have been known to mail denial notices slowly; check the date printed on the document, not the postmark or your receipt date.
If your insurer sends a deficient denial notice — one that fails to include the specific reasons for denial, the plan provisions relied upon, or notice of your appeal rights — they may not be able to enforce the deadline. Document any notice deficiencies in your appeal letter.
Deadlines by claim type
Not all appeals have the same urgency threshold. Federal regulation distinguishes several types:
| Claim type | Appeal deadline (minimum) | Insurer response time |
|---|---|---|
| Post-service claims (most common) | 180 days | 60 days |
| Pre-service non-urgent claims | 180 days | 30 days |
| Urgent care (expedited) | As soon as possible | 72 hours |
| Concurrent care | Immediate, before termination | 24 hours |
For urgent care claims, you can request expedited review. Under 29 CFR § 2560.503-1(i)(2)(iii), if following the standard timeframe would seriously jeopardize your life, health, or ability to regain maximum function, you have the right to expedited appeal review with a 72-hour insurer response obligation.
What happens if you miss the deadline
If you miss the 180-day deadline, your insurer can — and typically will — reject your appeal on procedural grounds. They do not need to evaluate the merits of your case.
There are limited exceptions:
Deficient notice: If your insurer failed to provide adequate notice of the appeal deadline (as required by 29 CFR § 2560.503-1(g)), they may be estopped from enforcing it. The notice must include "a description of the plan's review procedures and the time limits applicable to such procedures." If your denial letter does not state the deadline, raise this in your appeal.
Deemed exhaustion: Under 29 CFR § 2560.503-1(l), if the plan systematically failed to comply with the regulation's requirements, your claim may be deemed exhausted even after the deadline. This is a more complex argument, typically requiring legal analysis.
Equitable tolling: Courts have occasionally applied equitable tolling — pausing the clock — where a plan participant was prevented from timely appeal due to insurer misconduct or other extraordinary circumstances. This is an exception, not a rule.
How to protect yourself
- –Act as soon as you receive the denial. Do not wait until you are near the deadline.
- –Note the denial date on your EOB, not the date you received it.
- –Submit your appeal by certified mail with return receipt. Keep the receipt.
- –Confirm receipt if filing online. Screenshot the confirmation page before closing.
- –If you need more time, check whether your plan allows extensions. Some plans provide extensions for good cause — your plan documents will specify.
The 180 days feels like a long window. It disappears quickly when you factor in the time to gather medical records, obtain a letter of medical necessity from your physician, and draft an appeal letter that cites the applicable federal regulations.
Most people wait too long. Start the process as soon as you receive your denial.
Draft your appeal letter — 9.99
Frequently asked questions
What is the standard insurance appeal deadline?
For most employer-sponsored (ERISA) plans and ACA marketplace plans, you have 180 days from the date of the denial notice to file an internal appeal. The deadline runs from the denial date on your Explanation of Benefits, not from when you received it.
What happens if I miss the appeal deadline?
Your insurer can reject your appeal on procedural grounds — even if your denial was wrongful. Limited exceptions exist: if the insurer failed to provide adequate notice of the deadline, or if equitable circumstances prevented timely filing, you may have grounds to argue the deadline should not apply.
Are deadlines different for urgent claims?
Yes. For pre-service urgent care claims, ERISA requires insurers to respond to appeals within 72 hours. For concurrent care decisions involving ongoing treatment, the timeframe is 24 hours. You can request expedited review when standard timelines would seriously jeopardize your health.
See also: How to appeal a health insurance denial · ERISA appeal rights · Submission guide
Not legal or medical advice. Rebuttal is a document drafting tool, not a law firm. Review your letter before submitting and consult a licensed professional for legal questions specific to your plan.