Pick the denial type and level of care. See what the denial usually means, the question the reviewer is really answering, the evidence that answers it, a working deadline, and an appeal packet outline you can copy or download.
Before drafting a behavioral-health appeal, know the denial type, the criteria the plan applied, the dates at issue and the deadline. Then gather evidence that answers the plan's actual question: dated progress notes, risk documentation, treatment history at lower levels, standardized measures and a clinician letter. Administrative denials need the authorization trail or proof of timely filing instead.
Runs entirely in your browser. Nothing you type is sent to ClaimParrot or stored, and no patient details are needed: leave names and IDs as bracketed placeholders.
Denial decoder
What a medical necessity denial usually means
The plan's reviewer decided the record does not meet the plan's medical-necessity criteria for this service on these dates. It is a clinical judgment, so it can be answered with clinical evidence mapped to the criteria the plan used.
The reviewer's real question
Does the documentation for each disputed date show the severity and the risk the plan's criteria require for this service?
Best next move
Get the exact criteria the plan applied, then answer them one by one with dated chart evidence, and add a treating clinician's letter that explains why a lower intensity would not be safe or effective.
Evidence checklist
Proof that answers the denial
0 of 10 ready
Deadline triage
Working dates
Enter the date on the denial to see the working deadline.
Always use the deadline in the denial notice or plan documents if it is earlier. State law can give more time, never assume it.
Escalation path
If the first appeal fails
If the internal appeal is upheld, request external review: independent reviewers decide medical-necessity disputes, and the plan's own criteria are not the last word.
Highlighted brackets are placeholders: fill them in after you download, outside the browser.
Re: Appeal of medical necessity denial, Intensive outpatient (IOP)
Member: [Member name] · ID: [Member ID] · Claim/reference: [Claim or reference number]
Denial dated: [denial date] · Working deadline: [deadline from the notice]
1. Decision being appealed
The plan denied Intensive outpatient (IOP) for [dates at issue], stating: "[quote the stated reason]".
2. The criteria the plan applied
Name the criteria set and version the plan cited. If it did not, say that the criteria were requested on [date] and are not yet received.
3. Why the record meets the standard
Get the exact criteria the plan applied, then answer them one by one with dated chart evidence, and add a treating clinician's letter that explains why a lower intensity would not be safe or effective.
For each criterion: the requirement in your own words, then the dated chart evidence that meets it.
4. Evidence index
A. Denial letter with the stated reason and the criteria named
B. The plan's medical-necessity criteria for this benefit (request them in writing)
C. Intake assessment and current diagnosis with severity
D. Progress notes for each disputed date
E. Treatment plan with measurable goals and the plan for this level
F. Risk documentation: safety assessments, incidents, relapse history
G. Letter of medical necessity from the treating clinician
H. Standardized measures over time (for example PHQ-9, GAD-7, or the program's outcome tools)
I. IOP schedule, attendance and hours per week
J. Why weekly outpatient is not enough right now
5. Request
Overturn the denial and authorize/pay [service] for [dates or units]. If the plan upholds any part, identify the specific criterion not met and the evidence relied on, and provide the complete claim file free of charge.
6. Rights reserved
The member and provider reserve the right to further appeal, external review, or a state fair hearing as applicable.
Prepared with ClaimParrot's free appeal readiness checklist. Review every statement against the record before sending.
How it works
The rules behind the tool
What each behavioral-health denial type turns on
Denial type
The reviewer's question
Evidence that answers it
Medical necessity
Does the record meet the plan's criteria for this service on these dates?
Notes for each date, risk documentation, measures, clinician letter
Level of care
Why not the lower level the plan proposes?
History at lower levels, current risk, supports, services only this level provides
Continued stay
What still requires this level since the last review?
Daily notes after the last covered day, discharge barriers, updated plan
Prior authorization
Was authorization required, requested and approved for what was billed?
Request and approval records, dates and units compared with the claim
Coding
Does the claim match the payer's billing rules and the documentation?
Remittance codes, the claim as sent, time and unit documentation, payer policy
Do the assessment and progress data justify the hours requested?
Assessment, goals linked to hours, progress data, caregiver training plan
01
How do I use the appeal readiness checklist?
Choose the denial type, the level of care and the plan type, and enter the date on the denial. The checklist shows what the denial usually means, the reviewer's real question, an evidence list you can tick off, a working deadline and a packet outline to copy or download. Nothing you enter leaves the browser.
01Read the denial and pick the closest type. If it cites a remittance code, look it up in the denial code lookup first.
02Pick the level of care; it adds the level-specific evidence items.
03Pick the plan type and the date on the denial to get the working deadline. The deadline calculator has every other clock.
04Tick each piece of evidence as you collect it. Anything left unticked is either a gap to fill or a gap to explain.
05Copy or download the packet outline and draft the appeal in that order.
02
What should the denial notice tell you before you start?
For an employer plan, the notice must give the specific reason, the plan provisions relied on, any information needed to fix the claim, the appeal procedures and time limits, and the internal guideline relied on or a free copy on request. A medical-necessity denial must also explain the clinical judgment, or offer that explanation free.
These requirements are in 29 CFR 2560.503-1(g)(1). Since 2026, Medicare Advantage, Medicaid and marketplace plans covered by CMS-0057-F must also give a specific reason when they deny a prior-authorization request. A notice that says only "not medically necessary" is missing something; request the criteria and the explanation with the criteria request letter and say so in the appeal.
03
What evidence answers a medical-necessity or level-of-care denial?
Evidence that maps to the criteria the plan applied, for each date at issue: progress notes, risk and safety assessments, standardized measures over time, the treatment plan, the history of care at lower levels, and a treating clinician's letter that explains why a lower intensity would not be safe or effective now.
Plans commonly apply criteria sets such as ASAM, LOCUS/CALOCUS, InterQual or MCG, or their own guidelines. Map the record to the criteria the plan actually cited, in your own words; do not paste licensed criteria text into the appeal. Under the parity rule, plans must disclose the criteria for mental-health and substance-use benefits on request.
Send only what the criteria need for the dates at issue. Psychotherapy notes and substance-use records covered by 42 CFR Part 2 need extra care before they leave the program.
04
What about administrative denials like prior authorization, coding or timely filing?
These turn on paperwork, not clinical judgment. For prior authorization, line up the request, approval, dates and units against the claim. For coding, compare the claim with the payer's policy and the documentation of time and units. For timely filing, find the first proof of receipt. A corrected claim may fix it faster than an appeal.
Prior authorization: the request date, reference number and approval letter, compared line by line with the claim.
Coding: the CARC and RARC on the remittance, the codes, units and modifiers billed, and the payer's billing guide.
Timely filing: the clearinghouse acceptance report or payer acknowledgment with the original date.
ABA hours: the hours requested and approved by code, and the data linking hours to goals.
05
In what order should the appeal packet go?
Put the reviewer's question first: a cover letter that names the decision appealed and the relief asked for, then the criteria the plan applied, then the argument criterion by criterion, then an indexed evidence list with page references, then the clinician letter and the records. Close with the request and a reservation of further review rights.
The outline the tool generates follows that order and keeps bracketed placeholders for identifiers. Keep proof of when the packet was sent: a fax report, certified-mail receipt or portal confirmation.
Fictional example
An IOP medical-necessity denial
Riverside Counseling Center (fictional) gets a denial for intensive outpatient treatment from a plan of unknown type, dated October 1, 2026. The checklist, set to medical necessity and IOP, lists ten evidence items and a conservative working deadline of Monday, November 30, 2026, 60 days out until the plan type is confirmed.
The billing lead ticks six items the same day. The four gaps are the plan's criteria, a clinician letter, standardized measures over time and the IOP attendance log. She requests the criteria, asks the clinician for the letter, and pulls the measures and attendance from the EHR.
When the member's card shows an employer plan, the working deadline moves to 180 days. The team still files within three weeks, using the packet outline the tool produced.
Names, dates, payers and amounts are invented for illustration.
Where ClaimParrot fits
What a ClaimParrot packet adds
An appeal packet turns this checklist into a finished draft: an appeal letter built on the plan's stated reason, the evidence checklist and the deadline plan.
Level-of-care packets add a criteria crosswalk and a peer-to-peer brief, and a person checks every packet before delivery. Prices are on the pricing page; the first packet is free.
Send a de-identified summary, not records; Trust & security lists what the request form blocks.
Every draft is reviewed and approved by your team. ClaimParrot does not make medical-necessity determinations or give legal advice.
Common questions
Frequently asked questions
Which denial types does the checklist cover?
Medical necessity, level of care, continued stay or concurrent review, prior authorization, coding (codes, units, modifiers), timely filing, and ABA hours reductions, for residential, PHP, IOP, inpatient psychiatric, withdrawal management, outpatient and ABA services.
Do I need a letter of medical necessity for every appeal?
For clinical denials it is usually the most important document after the record itself, because it connects the facts to the criteria. For administrative denials it rarely helps; proof of authorization or timely filing does. See the IOP letter of medical necessity template.
How long do I have to appeal?
At least 180 days for employer and individual plans, 60 days for Medicaid managed care and 65 days from the notice date for Medicare Advantage, unless the notice gives a later date. Continued-stay denials need faster action. The appeal deadline calculator shows every clock with its rule.
Should I appeal or send a corrected claim?
If the denial is for a billing error you can fix, such as a wrong modifier, missing authorization number or wrong units, a corrected claim is usually faster. If the claim was right and the payer disagrees, appeal with the payer's own policy and the documentation.
Is any of my data stored?
No. The checklist runs in your browser and sends nothing to ClaimParrot. Use initials and bracketed placeholders; the outline keeps identifiers as blanks for you to fill in after downloading.
General information, not legal or medical advice. The denial notice, the plan documents and state law control; state law can give more time or more rights than the federal floor shown here. Read our editorial policy.
Doing this for every denial in the queue?
Send one de-identified denial and get the appeal letter draft, evidence checklist and deadline plan back, checked by a person before it reaches you. $29 per appeal packet, $99 per level-of-care packet; your first packet is free.