NEMT billing · WA
NEMT billing in Washington
Short answer
NEMT billing in Washington runs through the six regional brokers that the Health Care Authority contracts to arrange Apple Health rides, not through ProviderOne. A transportation provider is paid by the broker only under a subcontract with it, every non-ambulance trip is authorized by the broker before the client travels, and the broker's subcontract, trip verification and audit terms decide whether a trip is paid.
A dedicated Remitwright biller keeps each broker's authorization, mileage and submission rules straight and works the trips a broker questions, serving Washington transportation providers remotely. Rules for other states are on the NEMT billing by state page.
Last reviewed by the Remitwright billing team. Editorial policy
Key facts for Washington NEMT billing
| Fact | In Washington | Source |
|---|---|---|
| How NEMT is delivered | Regional broker model | 2 |
| Who you bill | Northwest Regional Council; Hopelink; Paratransit Services; Community in Motion (formerly Human Services Council); People for People; Special Mobility Services | 3 |
| Medicaid enrollment portal | ProviderOne | 8 |
How Washington delivers NEMT
Regional broker model. Washington established a brokerage for Medicaid non-emergency medical transportation in 1989, and HCA contracts with six transportation brokers that serve 13 geographic regions and cover all 39 counties, each one arranging rides for Apple Health clients in its own counties.2 WAC 182-546-5300 covers managed care enrollees through the same brokers as fee-for-service clients, and WAC 182-546-5200 requires each broker to hold subcontracts with transportation providers in order for the providers to be paid, to select the lowest-cost available mode that is both accessible to the client and appropriate to the client's condition, and to set the level of assistance for each authorized trip, from curb-to-curb to hand-to-hand. HCA's program page says the brokers are held to performance-based contracts.
Who you bill3
- Northwest Regional CouncilHCA's May 2025 broker list says the brokers are the first point of contact for any transportation-related complaint.
- Hopelink
- Paratransit Services
- Community in Motion (formerly Human Services Council)
- People for People
- Special Mobility Services
Getting enrolled as a NEMT provider in Washington
Medicaid provider enrollment in Washington runs through ProviderOne8. HCA's NEMT brokers contract directly with transportation service providers, so a Washington operator contracts with the regional broker for the counties it wants to serve and is paid by that broker rather than billing HCA for the trip2.
Contract with the broker for your counties. HCA's NEMT 101 says the brokers contract directly with transportation service providers and tells a prospective provider to contact the regional broker responsible for the counties where it wants to do business. Under WAC 182-546-5200 the broker and its subcontracted transportation providers must be licensed, equipped and operated in accordance with federal, state and local law and the terms of their contracts, the broker screens its subcontracted providers and their employees against the federal exclusion lists before contracting and on an ongoing basis afterwards, and a provider is paid by the broker only under a subcontract with it.2 HCA's sample broker contract sets the floor for every subcontract: drivers hold a valid driver's license, an abstract of driving record and insurance before serving clients; a new driver or volunteer clears a fingerprint-based Washington State Patrol criminal history check, repeated every three years with a WATCH report in the intermediate years, qualifying them for unsupervised access to children and vulnerable adults; the broker keeps records on each subcontractor's business licenses, certifications, insurance, driver verifications and vehicle inspections; and the subcontract gives the broker access to the provider's records for six years after it ends.
What every trip record needs4
- The broker's authorization for the trip, obtained before the client travels, or the retroactive authorization requested within two business days of an after-hours urgent care or hospital discharge transportWAC 182-546-6000 makes every non-ambulance trip subject to prior authorization by the broker, and WAC 182-546-5200 tells the provider to follow the broker's after-hours instructions when the broker is closed; the broker then documents the reason for a retroactive authorization in the client's trip record.
- The client's name and ProviderOne services card number, the pickup point and drop-off point the broker authorized, and the date and time of each one-way tripCMS states that at a minimum all states require the beneficiary's name and Medicaid identifier, the pickup and drop-off locations, the date and time the service was furnished, and the number of miles traveled with the beneficiary in the vehicle. A trip under WAC 182-546-5100 is one-way transportation from the pickup point to the drop-off point.
- Loaded miles between the authorized points only, because the agency pays nothing for intermediate stops or delays that are not directly related to the approved trip
- The mode and the level of assistance the broker set for the trip, curb-to-curb, door-to-door, door-through-door or hand-to-hand
- A note for every no-show and cancellation, since brokers report no-shows where the provider attempted the pickup to HCA each month and verify a sample of completed trips after the factThe sample broker contract requires a documented post-trip verification review on at least one trip in ten, and a biennial desk audit of ten randomly selected trips per subcontractor covering documentation, timeliness, coding and medical justification, with a site visit every other year to confirm the security of client files and manifests.
- Driver and vehicle files the broker can produce at that audit: license, driving record abstract, insurance, background check dates and vehicle inspection records
Codes and claim format
No HCPCS claim goes to HCA for a brokered trip. A transportation provider is paid by its broker under the subcontract, which sets the rates and the submission format, and the sample broker contract bars a subcontractor from seeking payment from HCA, from the client or from any other contract service provider for a subcontracted trip. The unit the rule and the contract recognize is the trip, one-way from the pickup point to the drop-off point, with meals, lodging, parking, tolls and ferry fees as separate units the broker authorizes.5 HCA publishes separate billing guides and fee schedules for ambulance transportation on its provider billing guides page, for ambulance providers that bill ProviderOne directly; the rule lets a broker subcontract with licensed ambulance providers for non-emergency ground ambulance trips, which are then paid by the broker too. Plain-language explanations of the transport codes and the origin and destination modifiers are on the NEMT billing codes page.
Filing windows
The broker's subcontract sets the deadline for submitting a trip for payment, and HCA's sample broker contract requires the broker to pay its subcontractors within ten calendar days of receiving HCA's reimbursement for allowed trips. HCA's own limit in WAC 182-502-0150, 365 calendar days from the date of service for a claim to reach the agency and be assigned a transaction control number, governs claims billed to the agency, which brokered trips are not.5 A client's own request for reimbursement of a preauthorized trip, meal or lodging must reach the broker within 30 calendar days after the appointment, and after delayed certification or retroactive eligibility a request must be made within 60 calendar days of the eligibility notice and no later than eight months after the date of service.
Common rejections in Washington, and the fix
Trip taken without the broker's authorization
The fixWAC 182-546-6000 requires prior authorization by the broker for every non-ambulance trip, and the broker mails a written denial to a client it turns down. For an urgent care appointment or a hospital discharge when the broker is closed, the provider follows the broker's after-hours instructions and requests retroactive authorization within two business days, or declines the trip. The biller checks each trip for its authorization before it goes on the broker invoice, so an unauthorized trip is caught before it is billed rather than after it is denied.
Trip inside three-quarters of a mile, or where a fixed-route bus was available
The fixWAC 182-546-6200 says the brokers do not pay when the covered service is within three-quarters of a mile of the pickup point, or when fixed-route public transportation is available within three-quarters of a mile walking distance, unless the client's documented and verifiable condition, an inaccessible or unsafe area, or a documented need for specialized transportation such as a portable ventilator or a walker supports an exception. The exception is the broker's to grant, so the biller keeps the broker's exception note with the trip.
Second round trip billed on the same day
The fixCoverage under WAC 182-546-5500 is one round trip per day, except for multiple medical appointments that cannot be reached in one round trip. The biller matches every extra leg to the broker's authorization for it before the trip is submitted.
Pharmacy detour or extra stop added to the trip
The fixThe agency pays no cost of an intermediate stop or delay that is not directly related to the approved trip, and only the broker may authorize a stop, for an immediate subsequent referral or a pharmacy within a reasonable distance of the usual route. A standalone pharmacy trip is limited to one a week per household unless a medical professional documents an urgent need. The biller bills the authorized legs only and flags the rest for the broker.
Trip to a provider outside the client's local community
The fixWAC 182-546-5700 limits clients to a local provider unless the broker authorizes an exception: the service is not available locally, continuity of care for a listed condition, a third-party payer that requires a specific network provider, or a lower total cost to the agency. The broker decides on documentation from the client's providers, so the biller files the broker's exception authorization with the trip.
Driver or vehicle file short at the broker's desk audit
The fixThe sample broker contract has the broker review ten random trips per subcontractor every two years and visit the subcontractor's office in alternate years, and it requires the license, driving record abstract and insurance of every driver, a Washington State Patrol fingerprint check for new drivers repeated every three years, and documentation of vehicle inspections. The biller keeps those dates on the roster and flags a driver whose file is short before that driver's trips are submitted.
Subcontractor billed the client, HCA or another contract provider
The fixEvery subcontract carries HCA's prohibition on seeking payment from HCA, from any of its clients or from any other contract service provider for services performed under the subcontract. A trip the broker denies is corrected and resubmitted or disputed with the broker; it is never billed to the rider.
Remitwright serves Washington transportation providers remotely, inside the dispatch and billing software you already run, with a dedicated NEMT biller. If you are weighing a dedicated biller against billing from dispatch yourself, outsourced NEMT billing, explained sets the two side by side.
FAQ
Questions from Washington transportation providers
Do we bill HCA or the broker for an Apple Health trip?
Which broker covers our counties?
How do we become a transportation provider in Washington?
What does a trip record need in Washington?
Can we bill a no-show, a wait, or an extra stop?
How long do we have to submit a trip to the broker?
Which codes go on a Washington NEMT claim?
What do you need from us to start billing Washington NEMT?
Next step
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