Appeal Deadline Calendar for Behavioral Health Denials
The appeal windows that actually apply by plan type — ERISA, Medicare Advantage, Medicaid managed care, Marketplace — and a calendar that computes each one on the day a denial arrives.
On this page: Direct answer
Direct answer
Appeal deadline by plan type: what operators need to know
The appeal windows that actually apply by plan type — ERISA, Medicare Advantage, Medicaid managed care, Marketplace — and a calendar that computes each one on the day a denial arrives. ERISA group health: 180 days from the adverse benefit determination, under 29 CFR 2560.503-1(h)(3)(i).
Timely filing and appeal deadlines are different clocks, and conflating them is how recoverable money becomes a write-off. Timely filing governs how long you have to submit a claim. An appeal deadline governs how long you have to challenge a determination, it starts on the notice rather than on the service, and it is shorter than most people assume for every plan type except ERISA group health.
The hard part is that the same insurer administers several plan types under different rulebooks. A denial from one brand can carry a 180-day window, a 60-day window, or a four-month external review window depending on which book the patient sits in. The calendar below computes the window from the plan type so nobody has to remember.
Key takeaways
The short version
- ERISA group health: 180 days from the adverse benefit determination, under 29 CFR 2560.503-1(h)(3)(i).
- Medicare Advantage: 60 calendar days from the organization determination notice, under 42 CFR 422.582.
- Medicaid managed care: 60 calendar days from the adverse benefit determination notice, under 42 CFR 438.402(c)(2)(ii).
- Federal external review: four months after notice of the final internal adverse determination, after internal appeals are exhausted.
- The clock starts on the notice, which means a notice that arrives late has already consumed part of your window.
- Compute the date on the day the denial arrives. Every other control on this page depends on that one habit.
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Appeal deadline calendar
One row per denial, with plan type selecting the window, the computed internal and external deadlines, working reminders, and the representative-designation field the chain depends on.
denial_ref,payer,plan_type,window_basis,window_days,notice_date,received_date,notice_to_receipt_gap_days,internal_appeal_deadline,working_deadline,hard_reminder_date,days_remaining,representative_designation_on_file,claim_file_requested_date,internal_appeal_filed_date,plan_decision_due,final_internal_denial_date,external_review_deadline,external_review_filed_date,level_of_care,amount,outcome,owner,next_action,next_action_due,miss_cause DEN-0001,[payer],ERISA group health,29 CFR 2560.503-1(h)(3)(i),180,2026-10-02,2026-10-14,12,2027-03-31,2026-12-01,2027-03-24,,yes,2026-10-14,,,,,,Residential,18400.00,pending,[name],file internal appeal,2026-12-01, DEN-0002,[payer],Medicaid managed care,42 CFR 438.402(c)(2)(ii),60,2026-10-06,2026-10-16,10,2026-12-05,2026-10-26,2026-11-28,,yes — enrollee written consent,2026-10-16,,,,,,IOP,4820.00,pending,[name],assemble interval evidence,2026-10-22, DEN-0003,[payer],Medicare Advantage,42 CFR 422.582,60,2026-09-28,2026-10-15,17,2026-11-27,2026-10-18,2026-11-20,,no — chase designation,,,,,,,PHP,9600.00,pending,[name],obtain representative designation,2026-10-20,
Saves as appeal-deadline-calendar.csv
Deadline quick reference
The windows and their citations in a form you can pin above a desk. Confirm state Medicaid fee-for-service and plan-specific terms locally.
1. Appeal deadlines are not timely filing
Timely filing is a contractual or regulatory limit on claim submission, usually counted from the date of service, and often generous by comparison. An appeal deadline is counted from the determination notice and is frequently much shorter. A team that has internalised a ninety-day or one-year filing limit will routinely let a sixty-day appeal window close while gathering records.
The two clocks also interact in a way that catches people out. A corrected resubmission may still be possible after an appeal window has closed, but only for denials that were never determinations. For a medical-necessity denial, the appeal window is the only route, and once it closes the balance is gone regardless of how much timely filing remains.
| Timely filing | Appeal deadline | |
|---|---|---|
| Counts from | Date of service, usually | Date of the determination notice |
| Set by | Contract or program rules | Regulation, by plan type, and plan documents |
| Typical length | 90 days to 12 months | 60 days to 180 days |
| What it governs | Whether a claim can be submitted | Whether a determination can be challenged |
| If it passes | Claim cannot be filed; proof of timely submission may rescue it | Determination stands; the balance is generally unrecoverable |
| Applies to | Claims | Adverse determinations, including partial approvals and downgrades |
2. The windows, by plan type
Identify the plan type before anything else. The insurer's name on the card tells you almost nothing about which of these applies, and the three main windows differ by a factor of three.
| Plan type | Internal appeal window | Next stage | Controlling text |
|---|---|---|---|
| Employer-sponsored and other ERISA group health | 180 days from the adverse benefit determination | External review, generally four months after final internal denial | 29 CFR 2560.503-1(h)(3)(i) |
| Medicare Advantage | 60 calendar days from the organization determination notice | Independent review entity, then further levels | 42 CFR 422.582 |
| Medicaid managed care | 60 calendar days from the adverse benefit determination notice | State fair hearing, generally within 120 days of the plan's appeal decision | 42 CFR 438.402(c)(2)(ii) |
| State Medicaid fee-for-service | Set by the state; often 30 to 90 days | State fair hearing | State plan and regulations |
| Non-grandfathered individual and group market | 180 days for internal appeal | Federal or state external review, four months after final internal denial | 29 CFR 2560.503-1; CMS external appeals guidance |
| Marketplace QHP | 180 days for internal appeal | External review | 45 CFR 147.136 and plan documents |
3. When the clock actually starts
The window runs from the notice, and the notice date is the payer's date, not the date you opened the envelope or noticed the remittance. A notice dated the sixth that reaches your desk on the twentieth has already consumed fourteen days of a sixty-day window. For electronic remittances the practical start is earlier still, because the determination is often available days before anyone reviews the file.
This is why the day-one habit matters more than any other control here. Record the notice date from the notice, compute the deadline from that, and treat the gap between notice date and receipt date as a measurable problem of its own.
- Take the notice date from the document, never from your receipt date.
- Record both dates, and watch the gap. A consistently large gap for one payer is a deliverability problem worth raising.
- Check electronic remittances on a fixed cadence; a determination sitting unreviewed in a file is a window burning down.
- For portal-only determinations, log the date the determination was posted, not the date someone looked.
- Where the notice is undated or ambiguous, record that fact in writing and ask the payer to confirm the date it calculates.
- Set an internal working deadline well short of the real one, so a slipped week is absorbed rather than fatal.
4. Sequencing internal appeals and external review
External review generally requires that internal appeals be exhausted first, and it has its own window that starts when the final internal determination is issued. The sequence creates a trap: a team that files the internal appeal on day 179 of a 180-day window has protected that deadline but compressed everything downstream, including the time to assemble a stronger external review submission.
- 01
Compute every deadline in the chain on day one
Internal appeal, second-level internal where the plan has one, and the external review window measured from the expected final internal decision. Seeing the chain changes how you pace the first step.
- 02
File the internal appeal well inside the window
Aim for the first third of the window. The remaining time is what lets you supplement with the claim file when it arrives.
- 03
Track the plan's own decision deadline for the appeal
Plans have timeframes for deciding appeals too. A plan that misses its own appeal deadline may open an earlier route to external review.
- 04
Diary the external review window on the final internal denial
Four months is the general federal window, measured from the notice of final internal adverse determination. Set it the day that notice arrives.
- 05
Use expedited routes where clinically justified
Where delay would jeopardise health, expedited internal appeal and simultaneous external review may be available. That is a clinical judgement, recorded by a named clinician.
- 06
Keep the patient's representative designation current
Most of this chain belongs to the patient. A designation that covers appeals and external review, signed at admission, prevents the whole sequence stalling on paperwork.
5. Running the calendar
- Make plan type a required field on every denial record; it is what selects the window.
- Compute the deadline automatically from notice date plus the window for that plan type. A manually entered deadline will be wrong.
- Set two reminders: an internal working deadline at roughly one third of the window, and a hard reminder a week before the real one.
- Sort the queue by days remaining, never by date received. Received order is not risk order.
- Review anything inside fourteen days daily, and escalate anything inside seven to a named person rather than a queue.
- Report deadline misses as process failures with causes, not as individual mistakes. Almost all of them trace to late notice capture or an unset deadline.
Common questions
Answers before you build.
Which is shorter, the appeal deadline or timely filing?+
Almost always the appeal deadline, and that is the trap. Teams that know their filing limits often assume they have comparable time to appeal. A Medicare Advantage or Medicaid managed care denial gives 60 calendar days from the notice, while filing limits for the same payer may run a year from the date of service.
Does requesting the claim file extend the appeal window?+
No. Document requests do not pause the clock. File the appeal inside the window and note that the request is outstanding, then supplement when the file arrives. An appeal decided while the plan withheld documents it was required to produce is itself an argument.
Can a provider file the appeal, or does the patient have to?+
It depends on the plan type. In Medicaid managed care a provider may file on the enrollee's behalf with written consent. Under ERISA plans the right belongs to the participant or beneficiary and a provider acts as authorized representative. Collect the designation at admission rather than at denial.
What happens if we miss the deadline?+
Usually the determination stands and the balance is unrecoverable. Some programs allow late filing for good cause, and Medicare Advantage has a mechanism for it, so a miss is worth one documented attempt — but it is a recovery option, not a plan. Record the cause so the next one does not happen.
Do these windows apply to audits and overpayment demands?+
No. Retrospective payer reviews — records requests, prepayment review, overpayment demands, extrapolated findings — run on their own response timelines, often much shorter, and they are set by the notice and the program rather than by appeal rules. Keep them in a separate workflow with their own clocks.
Practical closeout
Use this operator checklist.
- ERISA group health: 180 days from the adverse benefit determination, under 29 CFR 2560.503-1(h)(3)(i).
- Medicare Advantage: 60 calendar days from the organization determination notice, under 42 CFR 422.582.
- Medicaid managed care: 60 calendar days from the adverse benefit determination notice, under 42 CFR 438.402(c)(2)(ii).
- Federal external review: four months after notice of the final internal adverse determination, after internal appeals are exhausted.
- The clock starts on the notice, which means a notice that arrives late has already consumed part of your window.
- Compute the date on the day the denial arrives. Every other control on this page depends on that one habit.
Continue through the cluster
Verified customer case studies are added only with customer permission and supporting evidence; none is implied by these operational examples.
Codes on this topic
Look up the code on the remittance
Sources & methodology
Trace the operational claims.
Marsa Health Editorial reviewed the primary and research sources below on October 18, 2026. We translate them into workflow controls, distinguish proposals from final rules, and flag where plan, program, state, contract, or clinical requirements vary.
- 0129 CFR 2560.503-1: Claims procedure Electronic Code of Federal RegulationsParagraph (h)(3)(i) gives group health claimants 180 days to appeal; (h)(2)(iii) requires reasonable access to and free copies of all documents relevant to the claim; (m)(8) defines what counts as relevant.Accessed or rechecked October 18, 2026
- 0242 CFR 422.582: Request for a standard reconsideration Electronic Code of Federal RegulationsGives 60 calendar days from the organization determination notice to request reconsideration, and describes who may file.Accessed or rechecked October 18, 2026
- 0342 CFR 438.402: The State's grievance and appeal system Electronic Code of Federal RegulationsParagraph (c)(2)(ii) allows 60 calendar days from the adverse benefit determination notice to request a plan appeal, and sets when a provider may file on the enrollee's behalf.Accessed or rechecked October 18, 2026
- 04External appeals Centers for Medicare & Medicaid ServicesHow federal external review works for non-grandfathered plans, including the four-month filing window and expedited pathway.Accessed or rechecked October 18, 2026
- 05Appealing health plan decisions Centers for Medicare & Medicaid ServicesCMS guidance on internal claims and appeals rights, notice contents, and the relationship between internal appeals and external review.Accessed or rechecked October 18, 2026
- 06CMS Interoperability and Prior Authorization Final Rule CMS-0057-F Centers for Medicare & Medicaid ServicesCurrent implementation dates, decision timeframes, denial-reason requirements, metrics, and API provisions for impacted payers.Accessed or rechecked October 18, 2026
Organizational author. Editorial review covers source accuracy, search intent, workflow boundaries, and human-oversight requirements. This material is educational and does not provide clinical, legal, coding, or coverage advice.
No named clinical or legal expert reviewer is attributed to this version. Marsa Health does not invent reviewer credentials.
Read our editorial methodRevision history
What changed and when
October 18, 2026
Initial publication, source review, and operational editing.