Billing

Explanation of Medicaid benefits letters: when the state asks your riders whether a trip happened

Updated 8 min read

Overview

An explanation of Medicaid benefits (EOMB) letter lists services Medicaid paid for in a member's name and asks whether they were received. Federal rules require states to verify billed services with members, and states with federally funded claims systems mail notices to all or a sample of members within 45 days of payment. A rider who answers no can start a review of your trips.

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Medicaid programs and health plans mail some members a letter that lists services paid in their name: a doctor visit, a prescription, and sometimes wheelchair van trips with your company’s name beside them. The letter asks one thing, whether the member received those services. Members only need to act when something looks wrong, and a rider who marks a ride as “no” gives the program a reason to look at your records.

The federal rule behind the letter

The letter exists because federal rules require it. Every state Medicaid agency “must have a method for verifying with beneficiaries whether services billed by providers were received” (42 CFR 455.20). It is one of the fraud and abuse controls every state plan must contain (42 CFR 455.12).

States that receive federal matching funds for their claims processing system also have a deadline and a format. Under 42 CFR 433.116, the system must send individual notices within 45 days of paying claims, either to every member who received services or to a sample group. Each notice must show:

  • the service furnished
  • the name of the provider that furnished it
  • the date of service
  • the amount Medicaid paid

Services the state defines as confidential stay off the notice, and no notice goes out when the only service was confidential.

Managed care has its own version. A state’s contract with each health plan, including a transportation plan that pays for rides, must require the plan to verify “by sampling or other methods” whether services billed by network providers were received, on a regular basis (42 CFR 438.608(a)(5)). The same duty reaches a subcontractor the plan has handed claims payment to. So a rider in a health plan can hear from the state, the plan, or both.

What riders actually receive

The rule leaves the method to each program, so the letters look different from place to place. Three current examples show the range.

  • New York. The Office of the Medicaid Inspector General mails a form titled “Explanation of Medical (Medicaid) Benefits.” It lists dates, the provider, and the type of service for a stated period, and says at the top that it is not a bill. Members circle any service they did not receive and mail the form back only when there is a problem. Returns go to the inspector general’s Division of Medicaid Investigations. The form is printed in English and Spanish.
  • Texas. The Inspector General runs a monthly survey. It picks providers directly or by random sampling, then writes to some of the clients each provider billed for during the previous three months. The letter, marked “Explanation of Benefits” in the lower right corner, shows the service, date, provider name, and amount paid, and asks the member to circle yes or no and answer a few questions. The Inspector General says managed care organizations verify services too, sometimes in their own formats.
  • A North Carolina health plan. Partners Health Management told providers in May 2024 that its state contract requires member surveys built from claims it paid. It was mailing at least 165 a month for its fee-for-service work and expected to add more than 335 a month after its Tailored Plan began on July 1, 2024. Each survey asks whether the service was received, where it took place, whether the member paid anything out of pocket, and whether the member has other insurance.

The timing matters for you. A Texas letter covers services billed in the previous three months, so a rider can be asked about a ride from months back, long after the details have faded.

Why ride claims draw a “no”

A rider who marks a real trip as “not received” is usually confused, not lying. These are the common reasons, and most of them are fixable on your side.

  • The name on the letter is not the name on the van. The notice names the provider that billed. If you are enrolled under a legal name and riders know your trade name, they may not recognize the line. New York’s form asks a member who received a service but does not recognize the provider name to write down the name and location they do know.
  • Someone else booked it. Rides arranged by a dialysis unit, a nursing home, or an adult child may never have felt like “your” service to the rider.
  • A standing order fills the page. A dialysis patient riding three days a week can find a dozen trip lines on one letter and doubt the count.
  • The rider cannot answer reliably. Memory loss, a stroke, or a language barrier can produce a wrong answer. New York’s form lets someone other than the member complete it and identify themselves, and Partners asks who filled out the survey and their relationship to the member.
  • Your claim has an error. A typo in the date, a trip billed under the wrong member, or a second leg billed twice will show up on the rider’s letter as a ride that never happened. In that case the rider is right.

What a “no” sets in motion

A member’s answer is a complaint like any other. When the agency receives a complaint of fraud or abuse from any source, or spots a questionable practice, it must run a preliminary investigation to decide whether a full one is warranted (42 CFR 455.14).

Expect the review to start with your records. Your provider agreement already obliges you to keep records of the services you furnish and to hand them over on request to the Medicaid agency, HHS, or the state Medicaid Fraud Control Unit (42 CFR 431.107). Plans handle it much the same way. Partners routes survey discrepancies to its program integrity team, which may open an investigation, and says survey results alone will never cause a provider overpayment. Texas tells members that a service that differs from what was billed does not necessarily mean the provider did anything wrong.

If the review finds reason to believe fraud or abuse occurred, the stakes rise:

  1. Referral. In states with a certified Medicaid Fraud Control Unit, a provider suspected of fraud is referred there (42 CFR 455.15).
  2. Resolution. A full investigation ends in legal action, a closed case, or a resolution between the agency and the provider, which can include a warning letter, suspension or termination, recovery of payments, or other sanctions (42 CFR 455.16).
  3. Payment suspension. Once the agency finds a credible allegation of fraud, it must suspend payments unless it has good cause not to, and can do so without warning. Notice follows within five days unless law enforcement asks for a delay (42 CFR 455.23). See Medicaid payment suspension.

The records that answer the question

A review that starts with a rider’s “no” comes down to whether your trip record shows the ride. New York’s transportation policy manual sets out what that record needs, and it is a good model even outside New York. New York has required these items on every trip record since March 1, 2016:

  • the rider, by name and Medicaid ID
  • the date of the ride
  • the starting point and pickup time
  • the drop-off point and time
  • the plate of the vehicle used
  • the driver: license number, full name in print, and signature
  • the driver’s own confirmation that the ride was done, or a no-show entry instead

Paper is not required. New York accepts electronic records in place of paper when the driver uses a unique electronic signature, the app logs where the vehicle was, by GPS, at pickup and at drop-off, and each leg carries a date and time stamp the provider cannot modify, kept for six years. Minnesota’s rule adds the rider’s side: a signature from the rider or an authorized party, or from the medical provider confirming the rider arrived, with a driver’s note when both were requested and refused.

A rider’s signature on the day of the ride is the direct answer to a rider’s “no” three months later. The NEMT documentation requirements guide walks through each element, and electronic signatures for NEMT covers capturing them on a phone.

Answering a review that started with a rider

When a records request mentions specific members and dates, assume a verification letter or call is behind it.

  1. Match every date to a trip. Pull both legs, the signature, and the authorization, plus which driver and vehicle ran each one.
  2. Check your own claim first. Compare the billed date, member ID, procedure code, and units against the trip record. If you find a billing error, correct it and return any overpayment; the 60-day rule starts when you identify it.
  3. Explain the rider’s confusion with evidence. A standing order, a facility that booked the ride, or a trade name the rider knows can all be shown with documents.
  4. Send complete copies on time, indexed by date, and keep a copy of exactly what you sent.
  5. Do not contact the rider about the answer. Explaining that a letter is not a bill is fine. Asking a rider to change an answer is not.
  6. Get a health care attorney if a Medicaid Fraud Control Unit sends the request, or it arrives together with a payment suspension.

For destination questions, the companion guide on trips with no matching medical claim covers how auditors confirm the appointment end of the ride.

Talking to riders before the letter comes

A short script at intake prevents most confusion. Tell new Medicaid riders that the program may mail them a letter listing rides paid in their name, that it is not a bill, and which company name will appear on it. Keep family contacts on file for riders who cannot read or remember well.

Never collect more than a state-approved copay on a covered trip. The Partners survey asks members whether they paid out of pocket, and a “yes” next to your name invites a different kind of review. Our guide on charging Medicaid patients for transportation sets out what you can collect.

Trip records a rider’s answer can be checked against

When a rider’s answer starts a review, the trip record has to carry the proof on its own. HealthRide keeps the pickup and drop-off time for each leg, the GPS-recorded miles, and the signature the rider gives on screen in the driver app. Download the trip log for the dates in question from reports in CSV or PDF.

Frequently asked questions

Is an explanation of Medicaid benefits letter a bill?
No. New York's form says so in its first line: it checks that the member received the services listed and is not a bill. Riders who get one owe nothing. If a rider calls you worried about a letter, you can tell them it is a billing check and leave the answers to them.
Do riders have to answer the letter?
Usually not. The Texas Inspector General says a response is not required but is encouraged, and New York asks members to mail the form back only if something listed is wrong. Silence is not the risk for you. The risk is a rider who marks a ride as not received.
Can I call my rider and explain what to write?
Do not tell a rider how to answer. Texas tells members they may talk to their provider but asks them to answer from their own records or memory. You can explain that the letter is not a bill and tell them the company name you bill under. Anything that looks like steering the answer will hurt you more than the original question.
Will one "no" lead to a recoupment?
Not by itself, if your records hold up. Partners Health Management, a North Carolina health plan, told providers in May 2024 that survey results alone will never result in a provider overpayment; discrepancies go to its program integrity team, which may investigate. Recoupments come from what that review finds in your trip records and claims.
Why does the letter show a company name my rider does not know?
The notice must name the provider that furnished the service, so it shows the provider name Medicaid has on file for you. If that is a legal name and your vans carry a trade name, riders may not recognize it. New York's form asks members who received a service but do not recognize the provider name to write down the name and location they know.

Official resources

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