How to Appeal a Denied Medicaid Claim for NEMT in 2027: Steps, Deadlines, and Evidence

An appeal asks a payer to change a decision it already made. It works when your claim was right and the decision was wrong: the rider was eligible, you held the authorization, the miles were real. It costs time and has a hard deadline, so first make sure an appeal is the right tool.

Appeal or correct: decide first

When the error is yours, a corrected claim is the faster fix, and payers expect you to try the routine fixes first. Indiana requires providers to exhaust routine measures before asking for an administrative review, and Arizona asks providers to exhaust all authorized processing steps before filing a claim dispute.

What happened	What to do
The claim was rejected and never processed	Send a new, complete claim. See claim rejection vs denial.
Your own error, such as a wrong Medicaid ID, modifier, or unit count	Send a corrected or replacement claim. See corrected NEMT claims.
The trip should not have been billed	Void the claim. MTM Health’s Virginia handbook asks you to call your Field Monitor right away so MTM can void it.
The payer’s error, such as a missing authorization you actually hold	Ask for a reconsideration or review, then appeal if that fails
The claim is still pending	Wait. Arizona will not investigate a dispute on a pending claim until it is paid or denied, and Medi-Cal says not to appeal a claim in suspense.

Two rules shape this choice:

• A corrected claim keeps the original clock. Indiana treats a denied claim resubmitted with corrections as a new claim, subject to the same filing limit as the first. A claim resubmitted with no correction is a duplicate and denies again.
• Try the electronic fix first. Medi-Cal says voiding and resubmitting a claim electronically may resolve the issue without a paper appeal or Claims Inquiry Form.

To read the codes that tell you which situation you are in, see NEMT claim denials and claim adjustment reason codes.

Who hears your appeal: the state, the broker, or the health plan

You appeal to whoever denied the claim. Look at who sent the remittance.

• The state, for fee-for-service claims. The state Medicaid agency or its claims contractor reviews it first. In Arizona, Indiana, and South Dakota, an administrative hearing comes next. Medi-Cal’s claims contractor hears claims processing issues only. A dispute over a Treatment Authorization Request (TAR) decision, eligibility, or enrollment goes to the state or county department that handles it.
• A broker, for trips it assigned and paid. The broker’s own process comes first, set by your agreement and its contract with the state. MTM Health’s standard provider agreement, in the version Pennsylvania posts dated January 1, 2023, says its appeals process lets providers appeal any denied claim. In Indiana, fee-for-service NEMT claims that Verida adjudicates follow Verida’s review and appeal process, whether or not the provider has a contract with Verida. Indiana’s appeals module (March 24, 2026) still points those claims to Verida.
• A health plan, for its members. The plan’s provider reconsideration or appeal process comes first. Indiana requires every managed care plan to have a formal procedure for providers to request reconsideration of claim decisions. Arizona sends disputes for members enrolled in a health plan on the date of service to that plan, not to the state.

Broker trips in managed care states climb a ladder. Louisiana’s bulletin IB 21-02 (revised January 29, 2026) says NEMT providers must first seek resolution with the broker, then escalate to the health plan, and only then contact the Louisiana Department of Health (LDH). As of that revision, the bulletin lists MediTrans as the NEMT broker for all six Louisiana plans. See our pages on MediTrans, MTM Health, and Verida.

Appeal deadlines by state, broker, and plan

Every payer sets its own window. Many start the clock on the date printed on the remittance, not the date you opened it.

Payer	First step and deadline	Next level
Arizona AHCCCS fee-for-service	A written claim dispute to the Office of the General Counsel within 12 months of the date of service or eligibility posting, or within 60 days after the denial of a timely claim, whichever is later. Disputes over recoupments and other actions are due within 60 days of the action.	A state fair hearing, requested in writing within 30 days of receiving the Notice of Decision
Indiana fee-for-service	An administrative review within 60 calendar days of the remittance date. Receipt is confirmed within 10 business days and a decision comes within 45 calendar days.	An appeal to the state within 15 calendar days of the decision, plus a statement of issues within 45 days
Indiana NEMT billed to Verida	An administrative review through the Verida Provider Portal	A formal claim appeal to Verida in writing
Medi-Cal fee-for-service	A Claims Inquiry Form within six months of the denial date on the remittance, or an appeal on Form 90-1 within 90 days of the action. Appeals are acknowledged within 15 days and decided within 45, or 30 more days when referred for professional review.	A further appeal, or a lawsuit against the Department of Health Care Services within one year of the appeal decision
South Dakota Medicaid	A reconsideration in the Medicaid Portal within the 6-month filing period, or within 3 months of the denial. Responses usually come within 30 days.	A fair hearing request to the Office of Administrative Hearings within 30 days of the decision. A corporation must be represented by an attorney.
Louisiana managed care NEMT	Correct and resubmit within 365 days of the denial, or ask for reconsideration within 180 calendar days of the remittance paid or denial date. The broker decides within 30 days.	An appeal within 90 calendar days of the reconsideration decision (180 for one plan), decided within 30 days, then escalation to the plan and LDH
MTM Health, Virginia Medicaid fee-for-service	An appeal in MTM’s online claims portal within 365 calendar days of the denial, with the corrected information	A complaint through your Field Monitor or MTM’s Quality Management team

Two dates cause most missed windows:

• When the clock starts. Indiana counts from the date on the most recent remittance. Arizona’s 60-day window after a late denial counts from the status date on the remittance, which it calls the date of the adverse action. Medi-Cal counts from the action or inaction you are disputing.
• When your appeal counts as filed. Arizona counts the day its Office of the General Counsel receives the dispute, not the day you mailed it. Send it early, and by a method that gives you proof.

Put each deadline on a calendar the day the denial arrives. The claim denial log and the timely filing calculator help. Health plans and brokers not listed here set their windows in their provider manuals and your agreement.

The evidence that wins a NEMT claim appeal

An appeal is only as strong as its attachments. Match the evidence to the denial reason.

Denial reason	What to attach
Rider not eligible	The eligibility response for the date of service, or the notice that coverage was made retroactive. See eligibility verification.
No authorization, or the wrong one	The authorization or trip ID showing the rider, date, trip, and level of service. For Medi-Cal, the approved TAR.
Level of service not supported	The approval plus the trip record showing the vehicle used and the help given
Miles cut or denied	Odometer readings at each pickup and drop-off, or a mapped route. Indiana expects odometer readings or mapping software. Arizona may cut the difference between the miles out and the miles back unless the Daily Trip Report explains it.
Filed late	The acceptance report, claim number, or returned-claim letter from your first submission. Texas accepts TMHP rejection reports and Return to Provider letters as proof for claims filed while a new provider’s enrollment was pending.
Duplicate	Trip records with times and destinations that show separate trips, and the modifier your payer requires, such as XE in Indiana since August 19, 2025
No medical visit that day	Proof the rider went to a covered service that day, such as the facility’s signature on the trip record
Driver or vehicle not credentialed	The credential records valid on the date of service
Wrong information from the payer’s phone line	The date and time of the call and the representative’s name or operator number. Arizona may deny a dispute that relies on a call without them.

The medical visit check is real. In its audit of Massachusetts NEMT (report A-01-19-00004, January 25, 2021), HHS OIG found 86 of 100 sampled service lines did not meet the rules. It recommended matching every NEMT claim to a medical claim billed the same day. Credentials matter just as much: MTM Health’s standard agreement pays nothing for trips by uncredentialed drivers, attendants, or vehicles.

Medi-Cal lists what it wants with an appeal: the claim, corrected if needed, every remittance for it, every earlier inquiry and letter that shows timely follow-up, and the authorization. Indiana asks for everything originally required with the claim, any proof of timely filing, and a completed claim form so an approved claim can be paid faster.

Send only the trip details the reviewer needs. For what a complete trip record holds, see NEMT trip documentation requirements.

How to file an appeal, step by step

1. Pull the remittance line. Write down the claim number, date of service, amounts, and every code on the denied line. See how to read remittance advice.
2. Find the deadline and its start date. Use the payer’s rule from the table above or its provider manual.
3. Use the payer’s form and channel.
   • Medi-Cal: the Appeal Form (90-1), mailed to the Appeals Unit of the California MMIS Fiscal Intermediary.
   • Indiana fee-for-service: a secure message in the IHCP Provider Healthcare Portal under Claim Administrative Review Request, the IHCP Claim Administrative Review Request form, or a letter on letterhead marked “Claim Administrative Review.”
   • Arizona fee-for-service: a written dispute to the AHCCCS Office of the General Counsel by mail, hand delivery, fax, or the AHCCCS Online Provider Portal.
   • South Dakota: a reconsideration review submitted in the South Dakota Medicaid Portal.
   • Louisiana managed care NEMT: a reconsideration by phone, in writing, or in the broker’s portal. The broker must give you a reference number, which you use if you later appeal.
   • MTM Health in Virginia: the online claims portal.
4. Identify the claim. List your company name, NPI, and Medicaid provider ID, the rider’s Medicaid ID, the date of service, the trip ID, and the claim number. Indiana also wants the claim numbers of any earlier attempts to fix it.
5. Say what is wrong and what you want. State the decision, explain why it is wrong, and point to the rule in the payer’s own manual. Then name the relief, such as payment of the mileage line at the fee schedule rate. Arizona denies disputes that lack a detailed factual and legal basis and a stated request.
6. Attach the evidence. Label each page and refer to it in the letter.
7. Send it with proof. Keep the portal confirmation, fax report, or tracking receipt, and a full copy of what you sent.
8. Track the answer. Indiana confirms receipt within 10 business days, Medi-Cal acknowledges within 15 days, and Arizona sends an acknowledgment letter you should keep. Follow up before the next deadline if nothing arrives.
9. Watch the reprocessing. Arizona forwards an approved dispute to its claims unit, so do not resubmit the claim yourself. Indiana may ask for a new claim form, due within 30 days of its notice. A reprocessed claim can still deny for a different reason, so check the next remittance.

If you lose: hearings, outside review, and escalation

Each payer has a next level. Use it before the deadline passes.

• Arizona. Request a state fair hearing in writing within 30 days of receiving the Notice of Decision. An administrative law judge from the Arizona Office of Administrative Hearings hears the case and recommends a decision to the AHCCCS Director. You can petition for a rehearing within 30 days of the Director’s decision.
• Indiana. Since bulletin BT202642 (March 24, 2026), send the appeal to the Office of Medicaid Policy and Planning, not straight to the Office of Administrative Law Proceedings. Use the portal’s Appeal category or mail. An administrative law judge hears it, objections to the judge’s decision are due within 15 calendar days, and court review comes after that.
• Medi-Cal. You can send a further appeal, giving the reason on the Appeal Form, or file suit against the Department of Health Care Services no later than one year after the appeal decision.
• South Dakota. Ask the Office of Administrative Hearings for a fair hearing within 30 days of the reconsideration decision. A corporation must be represented by an attorney.
• Louisiana. For claims a plan denied, you can ask for a review by an independent reviewer under La. R.S. 46:460.81. Start with the plan’s request form within 180 calendar days of the remittance paid, denial, or recoupment date, then go to LDH within 60 calendar days of the plan’s decision. It costs $750, and the side that loses pays it. For any issue the broker and plan do not resolve, contact LDH at MedicaidTransportation@la.gov or 225-333-7473 with details of every attempt.

A win can pay even after a long fight. Federal rule 42 CFR 447.45 lets a state pay a claim at any time to carry out a hearing decision or an agency’s corrective action, and to extend it to others in the same situation. For brokers that stop answering, see how to escalate a NEMT broker problem and NEMT broker late payment.

When the rider has the appeal right

Some denials belong to the rider, not to you. When a Medicaid health plan denies or limits a requested trip, or denies payment for a service, federal rules call it an adverse benefit determination (42 CFR 438.400). A payment denial only because the claim was not a clean claim does not count.

Step	Federal rule
Who can appeal	The rider. A provider can file for the rider with the rider’s written consent, if state law allows it.
Deadline to appeal to the plan	60 calendar days from the date on the notice
Plan’s decision	Within 30 calendar days, or 72 hours when the rider’s health cannot wait. Either can be extended up to 14 days.
After the plan upholds it	A state fair hearing, requested within the state’s window of at least 90 and no more than 120 days

Plans must not take punitive action against a provider who asks for a fast decision or supports a rider’s appeal (42 CFR 438.410). They must also explain their grievance and appeal system to every provider when it signs a contract (42 CFR 438.414).

These plan rules do not reach every broker. A broker that contracts with the state only for NEMT, paid by capitation or another method that does not use state plan rates, is a NEMT PAHP. The federal plan appeal rules do not apply to it (42 CFR 438.402). Riders in those programs keep their right to a state fair hearing (42 CFR 438.9). See prepaid ambulatory health plan and managed care organization.

Do not bill the rider while you appeal

A denied claim is between you and the payer. Federal rule 42 CFR 447.15 limits Medicaid to providers who accept its payment as payment in full, apart from allowed cost sharing. MTM Health’s standard agreement says a provider may never bill a member, even when MTM or its client does not pay. The only exception is a copayment MTM or its client allows.

Keep denials from turning into appeals

Appeals take weeks. The cheaper fix is a claim that never denies.

• Work the remittance every week. Log each denied line with its reason code and deadline the day it arrives.
• Fix the cause, not just the claim. A wrong modifier on one claim is often on that rider’s other claims too.
• Close every trip record the same day, with times, loaded miles, and signatures.
• Keep proof of every submission, because it wins timely filing appeals.
• Recheck the claim form. The CMS-1500 guide for NEMT covers the boxes that deny most often.

A claim that paid can still be taken back after an audit, which follows its own process. See Medicaid recoupment and Medicaid audits for NEMT providers.