There is no single number. Appeal response times are set by three overlapping sources - your policy, state insurance regulation and, for many health plans, federal rules - and they differ by line of insurance, plan type and urgency.
That sounds unhelpful, but it makes the task specific rather than vague: find the deadline that governs your appeal, write it down, and treat it as a date you will act on rather than a date you will wait through.
What this guide covers
- Three sources set the deadline: your policy, state regulation and, for health plans, federal rules
- The denial letter usually states the applicable timeframe - read it first
- The clock generally starts on receipt, so send by a method that proves delivery
- Urgent health situations often qualify for a substantially faster expedited route
- Track their deadline as carefully as your own
- A passed deadline is a reason to escalate in writing, then to the state regulator
Where to find the deadline that applies to you
The denial letter. Insurers generally state appeal rights and timeframes in the adverse decision itself, often near the end in smaller type. This is the single most useful paragraph in the document and the one most people skim past.
Your policy or plan documents. For health coverage, the summary plan description or evidence of coverage sets out the appeal process. For property and casualty, the policy wording governs, sometimes alongside an appraisal clause for disputes about the amount of loss rather than coverage.
Your state department of insurance. Every state regulates claims handling conduct, including how quickly insurers must acknowledge and respond to communications. State websites publish consumer guidance, and the national regulator directory lists each office.
Federal rules, for many health plans. Group health plans and individual market coverage commonly operate under defined federal timeframes for internal appeals and external review, with expedited routes for urgent situations. Whether a specific plan is covered depends on the plan type, and self-funded employer plans follow their own regime.
Starting the clock properly
The response period generally runs from when the insurer receives the appeal, not when you send it. Two practical consequences:
Send by a method that produces a delivery record. Tracked or certified post with a signature is the strongest. Where an insurer offers a portal or a specific email address for appeals, use it and keep the confirmation.
Record the delivery date, not the posting date. Print the tracking record showing delivery, because tracking data is not retained online indefinitely.
If you submit through a portal, screenshot the confirmation screen including any reference number. Portals are convenient and their records are not always easy to retrieve later.
While you wait
Log everything. One dated line per contact: who you spoke to, what was said, what was promised, what you sent and how. Insurance appeals run for weeks or months and involve several people at the insurer.
Confirm calls in writing. A short email afterwards - "as discussed today, you confirmed the appeal was received on 3 September and a decision is expected by 18 October" - creates a record without confrontation and frequently prompts accuracy.
Do not keep resubmitting. Sending the appeal three more times does not accelerate anything and muddies the record of when it was received.
Keep gathering evidence where the appeal turns on a factual dispute. An independent contractor's report, an engineer's assessment, a treating clinician's letter or a second opinion can be submitted as a supplement if it arrives during the review.
When the deadline passes
Follow up in writing immediately. Reference the submission date, the delivery record, the applicable deadline and the fact that it has passed. Ask for a written status update and a decision date. Keep it factual and short.
Escalate internally. Ask for a supervisor or the appeals department manager, and put the same request to them in writing.
Complain to the state department of insurance. Regulators supervise insurer conduct and require companies to respond to consumer complaints, which creates a regulated record and sometimes unblocks a file that had stalled. Regulators generally do not adjudicate contract disputes or order payment of a particular claim - they oversee conduct - so treat this as an escalation alongside the appeal rather than a replacement for it.
Check whether the delay itself has consequences. Some states attach specific requirements to claims handling timeframes, and a failure to respond within them can matter separately from the merits. Whether that applies to your situation is a question for a licensed attorney in your state.
Tracking an insurance appeal
Read the appeal rights paragraph in the denial letter
Usually near the end. It states your deadline and often theirs.
Diarise your filing deadline with an advance reminder
Missing it can end the matter regardless of merit.
Diarise their response deadline too
The date you will chase, not the date you hope to hear.
Send by a method that proves delivery
Tracked post, or a portal confirmation you have screenshotted.
Record the delivery date, not the posting date
The clock generally runs from receipt.
Request expedited review if the situation is urgent
Say so explicitly and in writing; it usually must be asked for.
Keep a dated claim log
Every call, letter, document and promise.
Confirm significant calls by email the same day
Short factual summary of what was said.
Follow up in writing the day the deadline passes
Reference the dates and ask for a written status update.
Escalate to the state department of insurance if silence continues
Creates a regulated record requiring a response.
Note the external review deadline in the final decision
These are usually strict and easily missed.
Timeframes depend on your policy, the line of insurance, the plan type and your state. Confirm against your own documents and your state regulator.
After the internal decision
If the appeal succeeds, get the outcome in writing and confirm the payment or authorisation arrives as described.
If it fails, the final decision letter should set out what comes next - typically a second-level internal appeal where the plan provides one, then external review by an independent reviewer outside the insurer. For many health plans external review becomes available once internal appeals are exhausted, and the decision can bind the insurer. Availability for other lines depends on state law.
External review deadlines are usually short and stated in the final decision. Diarise that date the day the letter arrives, because it is one of the most commonly missed deadlines in the whole process.
For property claims, many policies also contain an appraisal clause for disputes about the amount of loss rather than coverage, under which each side appoints an appraiser and an umpire resolves differences. That is a separate route with its own mechanics. The appeal documentation guide covers how to structure the appeal itself and what evidence answers each type of denial.
When to bring in a lawyer
This guide covers deadlines and process. It does not interpret your policy, determine whether an exclusion applies, assess whether a delay breached any legal standard, or advise on litigation.
Speak to a licensed attorney in your state if the amount is significant, if internal appeals have been exhausted without resolution, if the insurer alleges misrepresentation on your application, if a limitation period in the policy is approaching, if you are asked to sign a release, or if repeated deadlines pass without substantive response. Your state department of insurance can also explain the escalation routes available to you at no cost.