NEMT Billing in 2026

Medicaid Trip Documentation, Broker Verification and the $84M New York Finding

By Team Rcmaxis  ·  October 23, 2026  ·  11 min read

A federal audit of New York City's non-emergency medical transportation payments for 2018 and 2019 reviewed about $269.6 million in federal share and found enough of it didn't meet Medicaid requirements that OIG recommended the state refund $84,329,893. That followed an earlier New York review that found 72% of a separate sample, roughly $196 million in federal reimbursement, went to claims that did not meet, or may not have met, Medicaid requirements. Two audits, one program, well over a quarter billion dollars in combined findings.

NEMT runs on a model almost nobody outside Medicaid billing fully understands: a state contracts with a broker, the broker contracts with transportation providers, and the only evidence that a billed ride actually happened is whatever documentation exists at the trip level. When that documentation is thin, which OIG keeps finding it is, the whole payment chain is vulnerable, state to broker to provider.

Here's how the broker model actually works, what trip documentation states are demanding, and what the repeated pattern of OIG findings in Massachusetts, New York and North Carolina should tell you about where to tighten your own process.

How the NEMT Broker Model Actually Works

Almost no state Medicaid program pays NEMT providers directly anymore. Instead, the state contracts with a transportation broker, who manages scheduling, dispatch and provider networks, and who bills the state (or a managed care organization) for completed trips. Individual drivers and transportation companies then bill the broker, not Medicaid, for each ride they complete.

That layered structure means your claim isn't really a Medicaid claim in the traditional CMS-1500/837 sense; it's a broker-specific billing format, with broker-specific documentation requirements, trip verification rules and payment timelines, that varies meaningfully from state to state and even broker to broker within a state. There's no single national NEMT billing standard the way there is for, say, ambulance billing under Medicare Part B.

Trip Documentation: What States Are Actually Requiring

Documentation requirements differ by state, but the pattern across the ones that publish detailed guidance is consistent: the trip log is the core record, and it has to independently verify that a specific ride happened, for a specific beneficiary, at a specific time.

Notice what these all have in common: none of them accept a billed trip on its own as proof the trip happened. Every one of them requires independent corroboration, a signature, GPS data, a verification call, something beyond the claim line itself. If your trip log process doesn't produce that independent corroboration today, it's the single highest-value fix available to you.

The $84 Million New York Finding, and the Pattern Behind It

The New York City audit's scale makes it the headline, but it's not an outlier. A separate OIG audit of Massachusetts found that of 100 sampled claim lines covering 2016 and 2017, 86 didn't meet federal or state requirements, against a reported $17.3 million paid across the sampled period, contributing to a broader finding that the state made at least $14 million in improper NEMT payments. A North Carolina audit sampled 200 items and found 118 didn't comply, for an estimated $18.7 million in improper claims, about $12 million of it federal share.

Read across these three states and the message OIG has been sending for over a decade is consistent: NEMT services have repeatedly been flagged as vulnerable to fraud, waste and abuse, and the vulnerability isn't exotic billing fraud, it's ordinary documentation that doesn't hold up when someone actually checks it. A majority of sampled claims failing in state after state points to a structural weakness in how trips get documented and verified, not isolated bad actors.

Build the NEMT Billing and Documentation Workflow

Treat trip verification as a non-negotiable step before a claim goes to the broker, not as paperwork to clean up afterward. Build the signature, GPS or verification-call capture into the trip itself, at pickup and drop-off, rather than relying on drivers to reconstruct it later.

Review your specific broker's and state's documentation manual at least annually, since requirements change, and confirm your retention practices match the longest applicable window, not just the shortest one you've heard about informally. Where a state runs pre- and post-trip verification sampling, like Washington's 10%/10% structure, make sure your own internal process produces records that would pass that exact kind of spot-check.

• Capture independent trip verification at the point of service. Signature, GPS, or a verification call, every ride, every time.
• Match your retention period to your state's actual requirement. Some run years past the service date.
• Audit your own claims the way OIG samples them. A 100-claim internal review catches what a broker or federal audit would.
• Review broker and state manuals annually. NEMT requirements change more often than most billing teams expect.

Our guide to ambulance and EMS billing covers the emergency transport side this guide doesn't, and our coordination of benefits guide covers the payer-sequencing issues that come up when a NEMT patient has coverage beyond Medicaid.

Frequently Asked Questions About NEMT Billing

How is NEMT different from ambulance billing?

Ambulance billing covers emergency or medically necessary transport requiring BLS or ALS-level care, billed to Medicare Part B or commercial insurance under its own code set. NEMT covers non-emergency rides, like a dialysis trip or a specialist visit, almost always for Medicaid members, delivered through a state's broker model and billed under entirely different state-specific rules and trip documentation requirements.

What documentation does a Medicaid NEMT trip need?

Requirements vary by state, but common elements include a trip log with the beneficiary's identity and signature, pickup and destination addresses, departure and arrival times, the driver's identity, and the vehicle used. Several states require records to be kept for years after the service date, and at least one major state program pays a claim only when the vendor can produce a trip log or GPS data verifying the trip actually happened.

What did the OIG find in its audit of New York's NEMT program?

A federal audit of New York City's non-emergency medical transportation payments for 2018 and 2019, covering about $269.6 million in federal share, found enough claims didn't meet Medicaid requirements that OIG recommended the state refund $84,329,893 to the federal government. That followed an earlier New York audit that found the state claimed $196 million in federal reimbursement, 72% of the amount reviewed, for transportation claims that did not meet or may not have met Medicaid requirements.

Why does NEMT keep showing up on OIG's audit list?

Prior OIG audit reports have consistently found NEMT services vulnerable to fraud, waste and abuse, largely because trip-level documentation is the only evidence that a billed ride actually happened, and it's frequently missing or incomplete. Audits of Massachusetts, New York and North Carolina all found large shares of sampled claims failing documentation requirements, with improper payment estimates ranging from roughly $14 million to over $84 million per state program.