Medicaid prepayment review: why a NEMT provider gets put on it and how to get off

Medicaid prepayment review is a hold on your claims while the state, or a contractor it hires, checks the records behind each one before deciding to pay. The claims that hold up get paid; the rest get denied. That makes it different from the two tools it gets confused with: a payment suspension, which holds money whether claims are good or not, and a Medicaid audit, which looks at claims already paid.

For a transportation company the practical problem is time. Every claim waits for a reviewer, payroll does not, and the only way off is to send claims that pass. This guide covers why companies get placed on it, the written exit rule in North Carolina, how Minnesota screens NEMT claims paid fee-for-service before releasing payment, and how to keep cash and records moving until it ends.

Prepayment review, payment suspension, and audit compared

The three differ in when the review happens and what happens to your money in the meantime. Prepayment review checks each claim before payment and pays the ones that pass. A payment suspension under 42 CFR 455.23 follows a credible allegation of fraud and holds payments regardless of claim quality, and a post-payment audit reaches back for money already paid.

Prepayment review also weakens a protection providers take for granted. The federal timely payment deadlines in 42 CFR 447.45 are built around clean claims, and that rule says a claim under review for medical necessity, or from a provider under investigation for fraud or abuse, is not a clean claim. Those claims fall outside the federal clean-claim deadlines, and states set their own review clocks instead.

If money is later found to be overpaid, the collection side works as described in the guide to Medicaid recoupment.

Why a transportation company gets put on it

There are two routes onto prepayment review: something about your billing, or something about the service you bill.

Your billing. North Carolina’s statute names, among other grounds, a credible fraud allegation, unusual billing that an investigation turns up, the state’s own data analysis, and a late answer to a documentation request. New York’s Office of the Medicaid Inspector General picks providers whose billing looks aberrant through post-payment reports, data mining, and referrals, then pends those claim types for review before payment. Its 2026 work plan names transportation among the areas under prepayment review and says it is updating its transportation audit protocols to target tolls that should not have been claimed.

Your service. After the governor’s October 29, 2025 announcement, Minnesota began holding each NEMT claim it pays fee-for-service for review before payment. NEMT is one of 14 services the state rated high risk. No individual finding is needed. The state says the review is tied to services, not provider types.

No reason at all. Florida’s Medicaid agency needs no suspicion of wrongdoing before it starts a prepayment review, and the review can run up to a year under its statute.

The trigger that is easiest to avoid is the missed records request. Treat every request from the state, its contractors, or a broker as a deadline, because in North Carolina a late answer alone is listed grounds.

North Carolina’s written exit rule

North Carolina is the clearest example of a written way off. G.S. 108C-7 applies to any provider required to enroll in NC Medicaid, and the state’s managed care NEMT policy requires plans to make their NEMT providers enroll through NCTracks. Transportation companies in the state’s Medicaid program are covered.

The notice goes by first-class mail, and the review cannot start before the mailing date. The notice must explain the decision, describe the process and processing times, say which claims are covered, list all supporting documentation required for each claim, explain how to submit, and set out how the state will decide the review is over.

Once claims start flowing, the clocks are short:

1. 20 calendar days for the state to process a clean claim after its review vendor receives the documentation.
2. 15 calendar days after the documentation due date for the state to send written notice of anything missing or deficient.
3. Another 20 days to process the claim once the missing documentation arrives.

To get off, a provider needs three consecutive months at a clean claims rate of at least 80 percent. Each of those months must carry at least half the provider’s average monthly Medicaid claim volume from the three months before placement, and a month with no claims scores zero. A provider that has not reached that standard six months after placement faces possible sanctions, up to termination of its participation agreement, or more months of review.

Take an example. A company that averaged 400 Medicaid claims a month before placement must submit at least 200 claims in each qualifying month. If it submits 220 in a month, at least 176 must be clean.

Failure has a long tail. A termination for failing the clean claims standard excludes the provider from future participation, and so does asking for a voluntary termination after failing it. Claims for services during the review period can still be reviewed after the provider comes off review, however late they are submitted.

Session Law 2026-1, which became law on April 30, 2026, tightened the rule for reviews begun from that day on. It raised the clean claims rate from 70 to 80 percent, dropped the old two-year ceiling on a review’s length, and let a prepaid health plan that the state authorizes by contract start a review without asking the state first. A plan may drop a provider who fails from its network once the state approves, and a request the state leaves unanswered for 90 days counts as approved.

How Minnesota’s NEMT claim review works

Minnesota’s review attaches to the service, so each NEMT claim billed fee-for-service goes through it, whoever submits it. The state’s vendor, Optum, runs suspended claims through analytics and checks that billed services were necessary, correctly documented, and provided. DHS reviews what gets flagged, and claims with no flag are released for payment one warrant cycle later, about two weeks. Held claims first appeared in the warrant cycle dated December 30, 2025. The state rate background sits in the Minnesota NEMT rates guide.

What a Minnesota NEMT biller sees and should do:

• Read the RA02. Suspended claims show as “suspended” on the Provider Supplemental Data remittance advice in the MN-ITS mailbox. The X12 835 shows only claims that were paid or denied, which means held claims never appear in it.
• Expect up to 90 days on some claims. State law gives the program 30 days for a clean claim. Complex claims, such as replacements or claims with attachments, get 90 days, and DHS has said some held claims could stay on hold as long as 90 days. It does not expedite.
• Watch the mailbox for requests. When DHS wants more on a particular claim, a request letter lands in the MN-ITS mailbox under file type PREPAYDOCREQUEST. No extra documentation is needed otherwise.
• Split mixed claims. When one claim carries a high-risk service alongside other services, the whole claim is held, so DHS suggests billing them separately.
• Keep serving members. Enrolled providers may not stop offering services, and DHS may disenroll a provider that does.

Only fee-for-service claims are in this review. Minnesota’s managed care plans review claims separately.

A broader version takes effect January 1, 2027, under new Minnesota Statutes section 256B.0447. From April 1, 2027, DHS has to run the enhanced review on 65 percent or more of the claims it pays fee-for-service. A provider singled out for review gets a written notice 15 or more days before it starts, stating why, when it begins, and how the state will decide to end it. The state may hold back that notice where it would compromise an investigation or audit. Providers under review may keep enrolling new clients, and the state must still meet the federal timely payment rule.

Keeping cash moving while claims wait

Plan for every reviewed dollar to arrive weeks later than usual, and fund the gap before it opens. In North Carolina a clean claim is processed within 20 days of the vendor receiving its documentation. Minnesota allows up to 90 days, and Florida allows 90 days after complete documentation, or 180 days when the agency holds reliable evidence of fraud.

For example, a company billing $45,000 a month in fee-for-service Medicaid trips whose payments slide from two weeks to eight weeks has roughly $62,000 more tied up at any moment. Payroll, fuel, and premiums keep their usual due dates. The NEMT cash flow guide walks through a 13-week forecast built around a slower payer, and the guide to a business line of credit covers borrowing against slow receivables.

Three habits keep the damage contained:

1. Keep billing at your normal volume. North Carolina scores an empty month at zero and bars withholding claims, and Minnesota requires enrolled providers to keep serving members.
2. Keep other services off reviewed claims. Minnesota’s advice to split mixed claims keeps unaffected services from waiting on reviewed ones.
3. Track every held claim by number and date. Match each claim to its documentation, its submission date, and any deficiency notice, so you can show when the state’s clock started.

Sending records that clear the claim

A claim clears when the reviewer finds everything the notice asked for, attached when the claim went in. North Carolina only considers documentation that is complete and legible and plainly names the provider. If you later appeal a denial, you must prove the required documentation was submitted with the claim and was available to the review vendor at its first review. Records sent afterward will not overturn that denial.

For a ride, that usually means the trip record: the rider, both addresses, when pickup and drop-off happened, the mileage, the driver and van assigned, the service level, and the authorization number. The NEMT documentation requirements guide lists what states and brokers expect in each record. New York checks transportation providers against its Department of Health transportation manual in credential verification reviews, so drivers and vehicles need to match what the manual requires as well.

Work the denials as they come in. Each denial reason points at the fix: a missing signature, a mileage figure that does not match the route, a trip without an authorization number. Fixing those patterns is what lifts the clean claims rate month over month. An internal trip audit checklist run on your own sample each week shows whether the fixes are holding before the reviewer’s numbers do.

A review that ends in sanctions is the point to bring in a health care attorney. North Carolina’s 45-day window to submit records after an appeal is filed leaves no time to start gathering them then.

Handing a reviewer the trip behind each claim

A clean claims rate climbs when the proof for each trip is ready before the reviewer asks. Each ride in HealthRide carries its own proof: GPS-recorded miles, a timestamp at pickup and another at drop-off, and the rider’s signature captured on screen. A CSV or PDF of the trip log from reports can be lined up against each held claim. Expiration reminders on licenses and other credentials keep a lapsed driver from slipping into the schedule unnoticed.