NEMT Billing Guide — ICD-10 Codes, HCPCS Codes, and Medicaid Claims for Medical Transportation
NEMT billing requires three code elements on every claim: a HCPCS procedure code (A0130 for wheelchair van, T2005 for stretcher van, A0428 for BLS non-emergency ambulance), an origin/destination modifier pair (e.g., RH for residence to hospital), and an ICD-10 diagnosis code establishing medical necessity (e.g., Z99.2 for dialysis dependence).
This guide provides the complete code reference tables, explains Illinois Medicaid billing pathways for both Fee-for-Service and MCO enrollees, covers the HFS 2271 certification process, and identifies the most common errors that cause NEMT claim denials. Bookmark this page as your billing department's quick-reference for medical transportation claims.
How NEMT Billing Works — The Three-Code System
Every NEMT claim submitted to Illinois Medicaid or a managed care organization requires three coding elements working together. Missing any one of these three elements results in an automatic claim denial.
- HCPCS procedure code: Identifies the type of transport provided. A0130 indicates a wheelchair van trip. T2005 indicates a stretcher van trip. A0428 indicates a BLS non-emergency ambulance trip. The procedure code determines the base reimbursement rate.
- Origin/destination modifier pair: A two-character code appended to the HCPCS code specifying pickup and dropoff facility types. R = residence, H = hospital, J = freestanding dialysis center. Example: RJ means residence to non-hospital dialysis facility.
- ICD-10 diagnosis code: Establishes medical necessity — the clinical reason the patient cannot use public transit or a personal vehicle. Z99.2 (dependence on renal dialysis) supports recurring dialysis transport. Z99.3 (dependence on wheelchair) supports wheelchair van claims.
Additionally, mileage codes (A0425, S0209, or S0215) are billed separately for per-mile reimbursement. Attendant codes (T2001) apply when a patient escort is medically required.
The sections below provide complete reference tables for each coding element. Facility billing departments working with NEMT providers like Dream Care Rides can use these tables to verify claim accuracy before submission. For questions about billing coordination, call (708) 505-6994.
HCPCS Codes for Non-Emergency Medical Transportation
The Healthcare Common Procedure Coding System (HCPCS) codes below cover every category of non-emergency medical transportation billed to Medicaid. The three codes most relevant to NEMT providers in Illinois are A0130 (wheelchair van), T2005 (stretcher van), and A0428 (BLS non-emergency ambulance).
| Code | Description | Typical Use |
|---|---|---|
| A0080 | Non-emergency transportation, per mile — vehicle provided by volunteer | Volunteer driver programs, community transport |
| A0090 | Non-emergency transportation, per mile — vehicle provided by individual with vested interest | Family member or caregiver reimbursement |
| A0100 | Non-emergency transportation, taxi | Taxi or rideshare for ambulatory Medicaid patients |
| A0120 | Non-emergency transportation, mini-bus | Multi-passenger transport, group medical trips |
| A0130 | Non-emergency transportation, wheelchair van | ADA wheelchair van trips — primary code for wheelchair NEMT |
| A0160 | Non-emergency transportation, per mile — caseworker or social worker | Social service transport coordination |
| A0425 | Ground mileage, per statute mile | Mileage add-on billed with ambulance codes (A0426, A0428) |
| A0426 | Ambulance service, ALS non-emergency transport, Level 1 | Advanced Life Support ambulance for non-emergency situations |
| A0428 | Ambulance service, BLS non-emergency transport | Basic Life Support ambulance non-emergency — used for stretcher patients requiring EMT staffing |
| T2001 | Non-emergency transportation, patient attendant/escort | When a trained attendant or aide accompanies the patient |
| T2002 | Non-emergency transportation, per diem | Incidental expenses (meals, lodging) for long-distance medical trips |
| T2003 | Non-emergency transportation, encounter/trip | Per-trip billing code when mileage-based billing is not used |
| T2005 | Non-emergency transportation, stretcher van | Stretcher van (non-ambulance gurney transport) — primary code for stretcher NEMT |
| S0209 | Wheelchair van, mileage, per mile | Mileage add-on for wheelchair van trips (billed with A0130) |
| S0215 | Non-emergency transportation, mileage, per mile | General NEMT mileage for non-wheelchair, non-ambulance transport |
Highlighted rows indicate the HCPCS codes most commonly billed by NEMT providers like Dream Care Rides for wheelchair transportation services and stretcher transportation in Chicago.
Billing tip: Always bill the base trip code (A0130, T2005, etc.) and the corresponding mileage code (S0209, A0425, S0215) as separate line items on the same claim. Bundling them into a single line item causes rejection in the Illinois IMPACT claims processing system.
Origin and Destination Modifiers — Getting Claims Approved
Every NEMT claim requires a two-character modifier pair identifying the pickup (origin) and dropoff (destination) locations. The origin modifier goes first, the destination modifier second. Using incorrect modifiers is one of the most frequent reasons for NEMT claim denials in Illinois.
Modifier Reference Table
| Modifier | Location Type | Notes |
|---|---|---|
| D | Diagnostic or therapeutic site (other than P or H) | Imaging centers, outpatient clinics, infusion centers |
| E | Residential, domiciliary, custodial facility | Assisted living facilities, group homes |
| G | Hospital-based dialysis facility | Dialysis unit within a hospital campus |
| H | Hospital | Inpatient facility, ER, hospital outpatient |
| I | Site of transfer between ambulance transport modes | Inter-facility transfer point |
| J | Non-hospital-based dialysis facility (freestanding) | Freestanding dialysis centers (DaVita, Fresenius, etc.) |
| N | Skilled nursing facility (SNF) | Nursing homes, long-term care facilities |
| P | Physician's office | Doctor's offices, specialist practices |
| R | Residence | Patient's home address |
| S | Scene of accident or acute event | Rarely used for NEMT (more common in emergency transport) |
| X | Intermediate stop at physician's office en route to hospital | Destination only — cannot be used as origin |
Common NEMT Modifier Pairs
| Modifier | Route | Trip Type |
|---|---|---|
| RH | Residence → Hospital | Hospital admission, outpatient surgery, ER follow-up |
| HR | Hospital → Residence | Hospital discharge transport |
| RJ | Residence → Freestanding Dialysis | Dialysis transportation (outbound) |
| JR | Freestanding Dialysis → Residence | Dialysis return trip |
| RG | Residence → Hospital Dialysis | Dialysis at hospital-based unit |
| GR | Hospital Dialysis → Residence | Hospital dialysis return trip |
| RD | Residence → Diagnostic/Therapeutic Site | Imaging, infusion therapy, outpatient procedures |
| DR | Diagnostic/Therapeutic Site → Residence | Return trip from diagnostic facility |
| RN | Residence → Skilled Nursing Facility | SNF admission transport |
| NR | Skilled Nursing Facility → Residence | SNF discharge transport |
| RP | Residence → Physician Office | Doctor visits, specialist appointments |
| PR | Physician Office → Residence | Return trip from doctor visit |
Common error: Billing staff frequently confuse G (hospital-based dialysis) and J (freestanding dialysis). DaVita and Fresenius locations are almost always freestanding (J), while dialysis units at Advocate Christ, University of Chicago Medical Center, or similar hospitals use G. Verify the dialysis facility type before assigning modifiers.
ICD-10 Diagnosis Codes That Support NEMT Claims
The ICD-10 diagnosis code on an NEMT claim establishes medical necessity — the clinical reason the patient cannot use public transportation or a personal vehicle and requires a specific transport type. Without an appropriate ICD-10 code, the claim will be denied regardless of how accurately the HCPCS and modifier codes are applied.
| ICD-10 Code | Description | Supports These Trip Types |
|---|---|---|
| Z99.2 | Dependence on renal dialysis | Recurring dialysis transport (ambulatory, wheelchair, stretcher) |
| N18.6 | End stage renal disease | Dialysis transport — often paired with Z99.2 |
| E11.65 | Type 2 diabetes mellitus with hyperglycemia | Dialysis-related transport, endocrinology visits |
| Z51.0 | Encounter for antineoplastic radiation therapy | Recurring radiation therapy transport |
| Z51.11 | Encounter for antineoplastic chemotherapy | Recurring chemotherapy transport |
| Z51.12 | Encounter for antineoplastic immunotherapy | Recurring immunotherapy transport |
| Z99.3 | Dependence on wheelchair | Wheelchair van claims (A0130) |
| R26.2 | Difficulty in walking | Wheelchair or stretcher claims when Z99.3 is not documented |
| M62.81 | Muscle weakness, generalized | Stretcher transport claims (T2005, A0428) |
| Z50.1 | Other physical therapy | Physical/occupational therapy transport |
| Z09 | Encounter for follow-up examination after completed treatment | Post-treatment follow-up visits |
| Z87.39 | Other musculoskeletal conditions | Post-surgical transport, orthopedic recovery |
Medical necessity tip: The ICD-10 code must logically support the HCPCS transport code billed. Billing T2005 (stretcher van) with Z50.1 (physical therapy) will likely be questioned — if the patient is attending physical therapy, reviewers may ask why stretcher-level transport is necessary. Pair T2005 with M62.81 (generalized muscle weakness) or R26.2 (difficulty walking) to demonstrate the patient cannot sit upright for transport.
For recurring transport (dialysis, chemo, radiation), the ICD-10 code on the standing order authorization must match the code on each individual trip claim. Mismatches between the authorization and the billed claim result in denial.
Illinois Medicaid Billing — Fee-for-Service vs MCO Pathways
Illinois operates a mixed NEMT model with two distinct billing pathways depending on how the patient is enrolled in Medicaid. NEMT providers must understand both pathways because using the wrong one results in claim rejection.
Fee-for-Service (FFS)
- For Traditional Medicaid enrollees not in a managed care plan
- Provider bills Illinois HFS directly through the IMPACT portal
- Prior authorization through Transdev/NETSPAP
- Claims use standard HCPCS codes + modifiers + ICD-10
- Reimbursement comes directly from the state
- HFS 2271 form required on file
Managed Care Organization (MCO)
- For patients enrolled in Meridian, Molina, CountyCare, IlliniCare, or other MCOs
- MCO contracts with a transportation broker (ModivCare, MTM, First Transit)
- Provider must be credentialed with the broker, not just HFS
- Trips assigned through the broker's scheduling system
- Reimbursement from the broker, not HFS
- Broker may have different documentation requirements
The critical distinction: Approximately 75% of Illinois Medicaid recipients are enrolled in an MCO. If your facility sends patients to medical appointments via NEMT, the majority of those trips will flow through the MCO/broker pathway. Providers who are only enrolled with HFS (and not credentialed with MCO brokers) miss the majority of Medicaid NEMT volume.
Dream Care Rides operates in this mixed model from our headquarters in Olympia Fields, IL — enrolled with Illinois HFS for FFS billing and credentialed with MCO transportation brokers for managed care volume. This dual enrollment ensures we can serve any Medicaid patient regardless of their enrollment type. For facility partnership inquiries, call (708) 505-6994.
Provider Enrollment Through the IMPACT Portal
Illinois Medicaid provider enrollment for NEMT operates through the IMPACT (Illinois Medicaid Program Advanced Cloud Technology) system. All NEMT providers must complete IMPACT enrollment before billing HFS for Fee-for-Service claims.
Enrollment Requirements
- National Provider Identifier (NPI): Type 2 organizational NPI required for billing. Individual drivers do not need NPIs, but the transport company must have one.
- Vehicle inspections: All vehicles must pass Illinois Department of Transportation safety inspections. Wheelchair vans require annual ADA compliance certification.
- Insurance minimums: Commercial auto liability ($1M per occurrence minimum), general liability, and workers' compensation coverage as specified by Illinois HFS.
- Driver qualifications: Valid Illinois driver's license, clean driving record (no DUIs, no reckless driving convictions within 3 years), background check clearance.
- Business documentation: Illinois Secretary of State registration, FEIN/tax ID, proof of business address.
The IMPACT portal enrollment process typically takes 30 to 90 days from initial application to approval. Providers should begin enrollment well before they plan to start billing Medicaid.
Note for facility billing departments: When verifying that an NEMT provider can bill Medicaid, confirm they have an active IMPACT enrollment status. Dream Care Rides' NPI is #1033989991 — verify it through the NPPES NPI Registry at npiregistry.cms.hhs.gov.
Prior Authorization — Transdev and NETSPAP Requirements
Key clarification: Transdev/NETSPAP is the prior authorization entity for Illinois Medicaid NEMT. It is not a transportation broker. Transdev authorizes trips but does not assign providers, negotiate rates, or process payments.
Before any Medicaid NEMT trip occurs in Illinois, the trip must be authorized through Transdev/NETSPAP (Non-Emergency Stretcher and Prior Authorization Program). This applies to both FFS and MCO pathways.
Authorization Types
- Standing orders (recurring trips): For patients who need transport on a regular schedule — three-times-per-week dialysis, weekly chemotherapy, or regular physical therapy. Standing orders authorize multiple trips over a set period (typically 30, 60, or 90 days) with a single authorization. The standing order specifies pickup address, destination, service type, and schedule.
- Routine authorization (48-hour advance): For one-time or irregular medical appointments. Must be requested at least 48 hours before the scheduled trip. The authorization confirms medical necessity, transport type, and trip details.
- Urgent/same-day authorization: For medically urgent situations that do not rise to 911 emergency level. Hospital discharges and same-day specialist referrals qualify. Authorization may be granted by phone with documentation submitted within 24 hours.
Denial prevention: Claims submitted without prior authorization are denied automatically. Providers who transport without authorization absorb the trip cost. Dream Care Rides coordinates prior authorization with Transdev/NETSPAP for all Medicaid trips, reducing administrative burden on facility discharge planners and billing staff.
HFS 2271 Certificate of Transportation Services
The HFS 2271 is an Illinois-specific form that certifies a Medicaid patient requires non-emergency medical transportation. It serves as the foundational medical necessity document for NEMT claims in Illinois.
Who Signs and What It Certifies
- Signer: The patient's attending physician or treating provider. Nurse practitioners and physician assistants may sign depending on facility policy and HFS guidelines.
- Certification: The form certifies that (1) the patient is unable to use public transportation, (2) the patient requires a specific type of transport (ambulatory, wheelchair, stretcher), and (3) the transport is needed for a medically necessary purpose.
- Validity period: The HFS 2271 has an expiration date set by the signing physician. For recurring transport needs (dialysis, ongoing treatment), the form may be valid for up to 12 months. For temporary conditions, shorter validity periods apply.
Critical warning: An expired HFS 2271 will result in denial of all NEMT claims for that patient, even if the Transdev/NETSPAP authorization is current. Billing departments should track HFS 2271 expiration dates and initiate renewal with the treating physician at least 30 days before expiration.
Dream Care Rides proactively monitors HFS 2271 expiration dates for recurring patients and coordinates renewal reminders with facility partners. This prevents billing gaps that disrupt patient care.
Driver Safety Training Requirements (Public Act 95-0501)
Illinois Public Act 95-0501 establishes mandatory safety training requirements for all non-emergency medical transportation drivers operating in the state. These requirements apply to every driver employed by or contracted with an NEMT provider, including subcontractors.
Required Training Areas
- Passenger assistance techniques: Safe methods for assisting ambulatory patients with mobility limitations, including proper use of transfer belts, gait belts, and ambulation aids.
- Wheelchair securement: Proper procedures for loading, positioning, and securing manual and power wheelchairs in ADA-compliant vehicles. Includes four-point tie-down systems and occupant restraint protocols.
- Emergency procedures: Response protocols for medical emergencies during transport, vehicle breakdowns, accidents, and severe weather. Includes when to call 911 vs. when to contact dispatch.
- Sensitivity training: Appropriate interaction with elderly passengers, cognitively impaired individuals, patients with visual or hearing impairments, and individuals with behavioral health conditions.
Drivers must recertify annually. NEMT providers are responsible for maintaining training records and making them available during Illinois HFS audits or vehicle inspections.
For facility partners: When evaluating NEMT providers, request proof of current driver training certifications. All Dream Care Rides drivers maintain current Public Act 95-0501 certifications, which are available upon request.
Common Billing Errors That Cause NEMT Claim Denials
NEMT claim denial rates in Illinois range from 5% to 15% depending on the provider. Most denials are preventable documentation and coding errors. Below are the most frequent denial causes and how to avoid them.
- Wrong origin/destination modifiers: Using G (hospital dialysis) when the patient goes to a freestanding DaVita center (J), or using H (hospital) for an outpatient imaging center (D). Fix: Verify the actual facility type before coding.
- Missing prior authorization: Transporting before Transdev/NETSPAP authorization is obtained. Fix: Build authorization verification into dispatch workflow — no vehicle departs without confirmed authorization number.
- Expired HFS 2271: The medical necessity certificate has lapsed. Fix: Track expiration dates 30 days ahead and coordinate renewal with the treating physician.
- ICD-10 / transport type mismatch: Billing stretcher transport (T2005) when the diagnosis code does not support the patient's inability to sit upright. Fix: Match diagnosis codes to the transport level — use M62.81 or R26.2 for stretcher claims, Z99.3 for wheelchair claims.
- Billing for undocumented no-shows: If the patient does not show for a scheduled trip, the provider cannot bill unless there is documented evidence of the attempted pickup (GPS log, timestamp). Fix: Maintain GPS-verified trip logs.
- Duplicate claims: Submitting the same trip twice, often due to round-trip vs. one-way confusion. Fix: Each leg of a round trip is a separate claim with its own modifier pair (RH for outbound, HR for return).
- Wrong provider NPI: Billing under an individual NPI instead of the organizational NPI, or using a deactivated NPI. Fix: Verify the active organizational NPI on every claim submission.
Facility billing departments that partner with Dream Care Rides receive trip documentation in a format designed to minimize coding errors — including pre-populated modifier pairs, authorization numbers, and mileage calculations for each trip.
How Dream Care Rides Simplifies Facility Billing
Dream Care Rides operates from Olympia Fields, IL, serving healthcare facilities across the Chicago metropolitan area with NEMT services designed to reduce claim denials and administrative burden on billing departments.
- Prior authorization coordination: We handle Transdev/NETSPAP authorization for all Medicaid trips, including standing order setup for recurring patients. Your discharge planner provides the trip details; we obtain the authorization.
- Clean trip documentation: Every completed trip includes a documentation package with the correct HCPCS code, origin/destination modifier, authorization number, mileage log, pickup and dropoff timestamps, and driver certification status.
- HFS 2271 expiration tracking: We maintain expiration dates for all recurring patients and send renewal reminders to the treating physician's office 30 days before expiration.
- Certified drivers: All drivers maintain current Public Act 95-0501 training, valid Illinois licenses, clean background checks, and annual recertification. Certification records are available on request.
- Dual Medicaid enrollment: Enrolled with Illinois HFS (NPI #1033989991) for FFS billing and credentialed with MCO transportation brokers — so we can transport any Medicaid patient regardless of enrollment type.
Illinois NEMT Rates
| Service Type | Base Rate | Per Mile |
|---|---|---|
| Ambulatory (Sedan/SUV) | $35 – $65 | $2 – $4/mi |
| Wheelchair (ADA Van) | $65 – $115 | $3 – $6/mi |
| Stretcher (Ambulette) | $300 – $525 | $5 – $16/mi |
Surcharges: Weekends 1.5x, Holidays 2.25x, Wait time $15–$30/15min, Oxygen $25, Stairchair $25. See full Illinois NEMT rates page. Use the NEMT cost calculator for instant estimates.
To discuss facility partnership rates, standing order pricing, or Medicaid billing coordination, contact Dream Care Rides at (708) 505-6994 or book a ride online. We serve facilities throughout our coverage area from Olympia Fields, IL.
Partner with Dream Care Rides for Clean Medicaid Claims
Reduce NEMT claim denials with a provider that handles prior authorization, delivers clean trip documentation, and tracks HFS 2271 renewals — so your billing team can focus on patient care, not paperwork.
Frequently Asked Questions
What HCPCS code do I use for wheelchair van transport?
A0130 is the HCPCS code for non-emergency transportation via wheelchair van. Bill A0130 for the base trip, then add S0209 for wheelchair van mileage per mile. Pair with the appropriate origin/destination modifier (e.g., RH for residence to hospital) and an ICD-10 code establishing medical necessity such as Z99.3 (dependence on wheelchair) or R26.2 (difficulty in walking).
What is the difference between A0428 and T2005 for stretcher transport?
A0428 covers BLS (Basic Life Support) ambulance non-emergency transport and requires a vehicle staffed with EMTs and equipped with medical monitoring capability. T2005 covers stretcher van transport, which provides gurney-level transport without the medical staffing of an ambulance. Stretcher van (T2005) is appropriate when the patient requires a supine position during transport but does not need active medical monitoring. T2005 reimbursement is lower than A0428, but claim denial rates are also lower because the medical necessity threshold is less stringent.
How do origin and destination modifiers work on NEMT claims?
Origin and destination modifiers are a two-character pair appended to the HCPCS code to identify pickup and dropoff locations. The first character indicates origin, the second indicates destination. For example, RH means residence to hospital, JR means non-hospital dialysis to residence, and RP means residence to physician office. Using incorrect modifiers is one of the top reasons for NEMT claim denials in Illinois.
Which ICD-10 code supports recurring dialysis transportation?
Z99.2 (dependence on renal dialysis) is the primary ICD-10 code for recurring dialysis transport claims. N18.6 (end stage renal disease) and E11.65 (type 2 diabetes with hyperglycemia) are supporting diagnosis codes that strengthen the medical necessity argument. For standing order authorization through Transdev/NETSPAP, Z99.2 is typically sufficient.
What is the difference between FFS and MCO billing in Illinois?
Fee-for-Service (FFS) billing goes directly to Illinois HFS through the IMPACT portal for Traditional Medicaid enrollees. Managed Care Organization (MCO) billing goes through the patient's MCO transportation broker. Providers must be enrolled with HFS for FFS claims and separately credentialed with each MCO broker for managed care claims. Most Illinois Medicaid recipients are enrolled in an MCO, making broker credentialing essential for NEMT providers.
Is Transdev a broker or a prior authorization entity in Illinois?
Transdev/NETSPAP functions as the prior authorization entity for Illinois Medicaid NEMT, not as a transportation broker. Transdev authorizes trips before transport occurs but does not assign trips to specific providers or negotiate rates. This distinction matters because providers bill HFS directly (for FFS) or the MCO broker (for managed care) after obtaining Transdev authorization. Confusing Transdev with a broker leads to billing errors.
What is the HFS 2271 form and when is it required?
The HFS 2271 (Certificate of Transportation Services) is an Illinois Medicaid form that certifies a patient cannot use public transportation and requires a specific level of NEMT service. The attending physician signs it, and it must be on file before claims can be processed. The HFS 2271 establishes medical necessity at the state level. Expired or missing HFS 2271 forms are a leading cause of claim denials for recurring NEMT services in Illinois.
What driver training does Illinois require for NEMT providers?
Illinois Public Act 95-0501 requires all NEMT drivers to complete safety training covering passenger assistance techniques, wheelchair securement procedures, emergency protocols, and sensitivity training for elderly and disabled passengers. Drivers must recertify annually. Failure to maintain current driver certifications can result in claim denials, provider decertification, and loss of Medicaid enrollment status.
How much does NEMT cost for facilities partnering with a provider in Illinois?
Illinois NEMT rates vary by service type: ambulatory transport costs $35 to $65 base plus $2 to $4 per mile, wheelchair transport costs $65 to $115 base plus $3 to $6 per mile, and stretcher transport costs $300 to $525 base plus $5 to $16 per mile. Facilities that establish standing contracts with providers like Dream Care Rides can access volume-based pricing. Call (708) 505-6994 to discuss facility partnership rates.
What are the most common reasons NEMT claims get denied in Illinois?
The five most common NEMT claim denial reasons in Illinois are: mismatched origin/destination modifiers, missing or expired Transdev/NETSPAP prior authorization, expired HFS 2271 certificate, ICD-10 diagnosis code that does not support the transport type billed, and billing under an incorrect provider NPI. Dream Care Rides maintains documentation systems to prevent each of these denial categories for facility partners.
About the Author
Otse Amorighoye is the Founder and CEO of Dream Care Rides, a licensed non-emergency medical transportation provider headquartered in Olympia Fields, IL. Dream Care Rides (NPI #1033989991) provides ambulatory, wheelchair, and stretcher transport services to healthcare facilities and patients across the Chicago metropolitan area. For billing coordination or facility partnerships, contact (708) 505-6994 or visit LinkedIn.