Claim Denial Appeal Timelines: How Long You Have, by Payer and by Level

Direct answer: A claim denial appeal deadline is the number of days you have to challenge a payer's decision, and the clock starts on the date on the determination notice, not on the day the denial reaches your queue. For Original Medicare, the first appeal, a redetermination by the Medicare Administrative Contractor, must be filed within 120 days of receiving the initial determination. The second level, a reconsideration by a Qualified Independent Contractor, allows 180 days. The third level, a hearing before an Administrative Law Judge, allows 60 days. The fourth level, review by the Medicare Appeals Council, allows 60 days. The fifth level, judicial review in federal district court, allows 60 days. Medicare Advantage, Medicaid managed care, commercial plans, and ERISA group health plans each run their own clocks, and most of them are shorter than Medicare's. The only safe habit is to read the deadline printed on every denial the day it arrives, log it, and treat it as a hard date.

When the Clock Starts

The single most expensive misunderstanding in denial appeals is the start date. The clock starts on the date of the determination, the date printed on the remittance advice or the determination notice, not the day someone on your team opens the mail, downloads the 835 file, or works the denial out of a queue. A denial that sits unworked for three weeks has already burned three weeks of its appeal window, and nothing about the payer's system will pause it while your queue catches up. That is why the first step on every denial is the same: find the determination date, find the deadline the payer states on the notice, and write both into your tracking system before anything else. If the notice does not state a deadline clearly, look it up in the payer's provider manual the same day, and if the manual is unclear, call the payer and get the deadline in writing.

Original Medicare's Five Levels

Original Medicare, also called fee-for-service Medicare, has a five-level appeal process, and each level has its own filing deadline, its own reviewer, and its own form. You must generally complete each level before moving to the next. The deadlines below come from the CGS Medicare guidance for providers.

Level 1 is the redetermination. You ask the same Medicare Administrative Contractor that made the original decision to look at it again, using form CMS-20027. You have 120 days from receipt of the initial determination to file, and there is no minimum dollar amount. The MAC generally decides in about 60 days. Level 2 is the reconsideration. A Qualified Independent Contractor, an organization independent of the MAC, reviews the case. You have 180 days from receipt of the redetermination notice to file, using form CMS-20033, and again there is no minimum dollar amount. The QIC generally decides in about 60 days. Level 2 gives you more time than Level 1, because the record is already built and the reviewer is new.

Level 3 is the hearing before an Administrative Law Judge at the Office of Medicare Hearings and Appeals. The window tightens sharply here: you have 60 days from receipt of the reconsideration decision to request a hearing. The amount in controversy must be at least $200 for requests filed in 2026. The ALJ decision target is about 90 days. Level 4 is review by the Medicare Appeals Council, part of the Departmental Appeals Board. You have 60 days from the ALJ decision to request it, and there is no dollar threshold at this level. Level 5 is judicial review in federal district court. You have 60 days from the Appeals Council decision to file, and the amount in controversy must be at least $1,960 for 2026.

A note on the dollar figures: the $200 amount for an ALJ hearing and the $1,960 amount for federal court are the 2026 amounts from the CGS Medicare source. The amounts in controversy change from year to year, so check the current CMS figure before you rely on either number for a case filed in a different year.

Medicare Advantage: Shorter Clocks

Medicare Advantage plans do not use the Original Medicare five-level ladder in the same way, and their clocks are shorter. The first appeal goes to the plan itself, and you generally have 60 days from the date on the plan's notice to file it. Later levels also generally run on 60-day clocks. That means a Medicare Advantage denial gives you roughly half the time of an Original Medicare redetermination, and the plan's own notice is the authority for the exact deadline. Read the plan's notice, confirm the deadline in the plan's provider manual, and diary it the day the denial arrives. If the plan denies the first appeal, the notice will state the deadline for the next level, an independent review entity.

Medicaid Managed Care and State Fair Hearings

Medicaid managed care follows a similar pattern to Medicare Advantage. The first appeal generally goes to the managed care plan, and you generally have 60 days from the notice to file it. After the plan's internal appeal, the next step is usually a state fair hearing, and the rules for that hearing vary by state: the deadline, the form, and the filing route are set by the state, not by the plan. For every Medicaid denial, read the plan's notice for the internal appeal deadline, then check the state's fair hearing rules for the step after that, and log both dates. A provider billing Medicaid in more than one state needs a deadline reference for each state.

Commercial Plans: The Contract Governs

Commercial payers set their own appeal deadlines, and the contract governs. Commonly, commercial appeal windows run from 30 to 180 days, but that range is a description of what is common, not a promise for any named payer. One plan may allow 30 days, another 180, and a third something in between, and the same payer may set different windows for different products or different denial reasons. On every commercial denial, check the denial letter and the provider manual for that specific payer and product, and treat the letter's stated deadline as the controlling date. If the letter and the manual disagree, call the payer and get the answer in writing.

ERISA Plans and External Review

For group health plans governed by ERISA, the Employee Retirement Income Security Act, the law sets a floor for internal appeals: you have at least 180 days to file an internal appeal. That is a minimum, not a standard deadline, so the plan's own documents may allow more time, but they may not allow less. Once internal appeals are exhausted, external review is the next step, and the window for requesting it is about four months after internal appeals are exhausted. External review matters because the reviewer is independent of the plan, and the decision is binding on the plan in most cases. Track the internal appeal deadline and the external review window as two separate dates, in that order: a review request filed before internal appeals are finished will usually be rejected as premature.

Worked Example, an Illustrative Denial

The following example is illustrative, with generic facts and no real client, patient, or payer. A practice receives a remittance advice dated March 3, showing a claim denied. The remittance is downloaded into the billing system the same day, but the denial sits in the work queue, and nobody opens it until March 24. By then, 21 days of the appeal window are already gone, and nobody on the team knows it, because no deadline was logged when the remittance arrived. The denial is an Original Medicare denial, so the first appeal is a redetermination, due 120 days from receipt of the initial determination. Counting from the determination date, the deadline falls in early July. The biller prepares the redetermination in late June, finds the chart notes are still with a provider on leave, and files on the last working day before the deadline, with a thin record and no time to fix it. Compare that with the same denial handled on arrival: the biller logs the March 3 determination date and the July deadline on March 3, requests the records the same week, and files in April with a complete record and time to spare. The denial, the payer, and the facts are identical in both versions. A denial that waits three weeks in a queue has lost three weeks of appeal time.

The Appeal Deadline Queue

Deadlines only help if they are tracked as dates, not as intentions. Run an appeal deadline queue with four states. New denial, deadline logged: the determination date and the filing deadline are recorded the day the denial arrives, with the payer, the level, and the form named. In preparation: the records and the appeal letter are being gathered, with an internal target date set at least two weeks before the real deadline, so a missing record does not become a missed deadline. Filed: the submission date and the confirmation or receipt number are logged, and the expected decision date is diarised. Decision received: the outcome is logged, and if the appeal was denied, the next level's deadline is logged the same day the decision arrives. Two rules hold the queue together. First, the internal target date is always at least two weeks before the payer's deadline. Second, no denial leaves the "new" state without a logged deadline, because a denial with no date in the system is a denial whose deadline will be discovered too late. Review the queue weekly, oldest deadline first, and treat any appeal within 14 days of its deadline as urgent, regardless of its dollar amount.

Checklist

• Log the determination date and the filing deadline the day every denial arrives, before anything else is done with it.
• Read the deadline on the notice itself, and confirm it in the payer's provider manual.
• For Original Medicare, remember the ladder: redetermination 120 days, reconsideration 180 days, ALJ hearing 60 days, Appeals Council 60 days, federal court 60 days.
• For Medicare Advantage and Medicaid managed care, expect about 60 days for the first appeal and confirm it on the plan's notice.
• For commercial plans, never assume a deadline: check the denial letter and the provider manual for that payer and product.
• For ERISA plans, remember the floor of at least 180 days for an internal appeal, and about four months for external review after internal appeals are exhausted.
• Set your internal target date at least two weeks before the payer's deadline.
• Keep the form for each Medicare level on file: CMS-20027 for redetermination, CMS-20033 for reconsideration.
• Check the current CMS amount-in-controversy figures before relying on the $200 and $1,960 amounts for a filing year other than 2026.
• Review the appeal queue weekly, oldest deadline first.

A note on codes and coverage: This article is educational information about billing appeals and deadlines, not legal advice. Appeal deadlines, forms, and amount thresholds vary by payer, plan, and year, so always verify them against the payer's notice, the provider manual, and the current CMS guidance before acting. The Medicare figures in this article are from the CGS Medicare source for 2026, and the dollar thresholds change yearly.

Related reading: Medical Billing Appeal Letter Template · Claim Denial Management Workflow · How to Appeal a CO-29 Timely Filing Denial · Claim Denial Codes: Complete Guide · Timely Filing Limit in Medical Billing · How to Appeal a CO-50 Denial

Part of the complete guide: Claim Denial Codes: The Complete Guide for Medical Billing — every code in this article, explained in one place.