HCPCS code T2002 – Per diem non-emergency transportation

Key takeaways

HCPCS Code T2002 bills non-emergency transportation as a per diem, one flat daily rate for the beneficiary’s transport that day.

T2002 is Medicaid-only, and Medicare fee-for-service does not pay non-emergency transport under this code.

T2003 bills a single one-way trip and T2001 bills an attendant or escort.

Adding per-trip T2003 units to a T2002 day bills the same trips twice.

Prior authorization requirements vary by state Medicaid program and managed care organization.

Claims software such as Pabau checks eligibility and validates each claim before it reaches your clearinghouse.

HCPCS Code T2002: Definition and official descriptor

HCPCS Code T2002 describes non-emergency transportation; per diem. CMS assigns it to the T-code series, national codes established for state Medicaid agencies to bill services that Medicare and CPT codes do not address. The unit of service is one day.

One unit covers the beneficiary’s non-emergency transport for that date, so an outbound trip and its return are not billed as separate T2002 units. Each state Medicaid program defines exactly what its daily rate includes.

The T-series is published and maintained by CMS as part of the HCPCS Level II code set. Unlike CPT codes, T-codes are not licensed through the AMA. They are free to use in the CMS annual HCPCS release files, and the neighboring transport codes sit in our HCPCS code library.

What T2002 covers and what it excludes

T2002 covers ground-based non-emergency transportation for Medicaid beneficiaries traveling to or from a Medicaid-covered service appointment. The trip is not medically urgent, and the beneficiary is ambulatory or can travel in a standard vehicle. The billing unit is one day, paid at a flat rate, rather than one trip or one mile.

• Covered: Non-emergency ground transport to and from Medicaid-covered medical appointments (physician visits, dialysis, pharmacy, behavioral health), billed as one unit per day
• Covered: The outbound and return trips on the same date, which fall inside the one per diem unit where the state pays a daily rate
• Covered: Transport arranged by a Medicaid transportation broker or managed transportation organization (MTO)
• Not covered: Emergency transport (use A0427 or A0429 from the ambulance A-code series)
• Not covered: Single one-way trips billed per trip (use T2003, non-emergency transportation; encounter/trip)
• Not covered: An attendant or escort traveling with the beneficiary (use T2001, non-emergency transportation; patient attendant/escort)
• Not covered: Mileage, which is usually billed with S0215 (non-emergency transportation; mileage, per mile) or a state-specific code
• Not covered: Stretcher transport, wheelchair van transport with specialized attendant, or air transport (each has its own HCPCS code)
• Not covered: Trips not linked to a Medicaid-covered service appointment

The exclusion that matters most is per-trip billing on a per diem day. A T2002 unit already pays for that day’s transport, so adding T2003 units for the same beneficiary and date bills the same trips twice.

State Medicaid programs and MCOs routinely deny claims that carry both codes. Whether mileage can be added on top of a per diem depends on the state, so check the fee schedule before billing S0215 with T2002.

T2001 vs T2002 vs T2003: Choosing the right code

T2002 bills a whole day of transport at a flat rate, while T2003 bills one one-way trip. T2001 is a different kind of code. It bills a patient attendant or escort who travels with the beneficiary, not mileage.

The choice between T2002 and T2003 depends on whether the state Medicaid program or MCO contract pays per day or per trip. Billing both for the same transport on the same date is duplicate billing in any state.

Check your state Medicaid fee schedule or MCO contract before selecting a code. When the contract pays one rate per beneficiary per day, T2002 is correct. When it pays for each one-way trip, use T2003. Bill mileage with S0215 or your state’s own code, never with A0425, which is ground ambulance mileage.

The same round trip shows how much the contract changes the claim line.

T2002 documentation requirements

Documentation for T2002 claims must prove Medicaid eligibility on the date of service, a covered appointment behind each trip, and medical necessity for the transport. Sound revenue cycle management collects this paperwork before the vehicle moves, while the driver and the referring provider are still easy to reach.

1. Trip log: Date of trip, pickup address, destination address, beneficiary full name, Medicaid ID number, driver or vehicle identifier, and actual departure and arrival times
2. Appointment verification: Confirmation that the destination was a Medicaid-covered service (appointment date, provider name, service type)
3. Medical necessity order: Physician or provider order, referral, or prescription linking the transport to medical care (many states require this in writing)
4. ICD-10 diagnosis code: A supporting diagnosis explaining why the beneficiary needs transportation to this service. Use the primary diagnosis driving the appointment, or Z59.82 (transportation insecurity) where the payer accepts it
5. Prior authorization number: If the state or MCO requires PA, the authorization number must appear on the claim. Expired or missing PA numbers are the top denial trigger
6. Beneficiary signature or attestation: Some states require the beneficiary to sign the trip log confirming the trip occurred

Keep trip logs for the full Medicaid records retention period, which ranges from five to ten years depending on the state. OIG audits of NEMT programs routinely target missing or inconsistent trip documentation.

T2002 prior authorization and payer requirements

T2002 prior authorization rules are state-specific. There is no uniform federal requirement, because CMS lets states design their own NEMT benefits. One state may require PA for every trip, while another delegates authorization entirely to its transportation broker network.

Conducting insurance eligibility verification before each trip confirms that the beneficiary is currently enrolled in Medicaid and that NEMT is covered under their specific plan. This is especially important for Medicaid managed care enrollees, whose MCO may have different PA workflows than the state’s fee-for-service program.

• Fee-for-service Medicaid: Contact the state Medicaid agency directly for PA requirements. Many states use a centralized transportation broker that handles authorizations on the agency’s behalf
• Medicaid managed care (MCO): Each MCO sets its own PA threshold, so check the MCO’s provider manual. Some require PA only for trips over a mileage threshold, and others require it for every non-emergency trip
• Retroactive PA: Most states do not accept retroactive authorizations. If PA was not obtained before the trip, the claim will be denied and appeal options are limited
• Broker-managed programs: In states that use managed transportation organizations (MTOs), the broker both authorizes and manages the trip. The biller receives the authorization number from the broker rather than the state agency

Modifiers used with HCPCS Code T2002

Modifiers append additional information to T2002 without changing the code itself. Not all modifiers change the reimbursement rate, and some are informational only. Use only the modifiers your state Medicaid program or MCO explicitly accepts, because unsupported modifiers can trigger claim edits or denials.

TP and TQ are not mutually exclusive with T2002, but verify the billing manual before stacking multiple modifiers on a single claim line. Some state systems accept only two modifiers per line.

Reimbursement rates and how Medicaid calculates payment

There is no national reimbursement rate for T2002. Because NEMT is a Medicaid benefit, each state sets its own fee schedule rate through its published fee schedule or through MCO contracts. Rates vary widely, and urban markets with higher transportation costs typically carry higher rates than rural programs. Before billing, confirm which rate table applies to the beneficiary and whether a contract rate overrides the published fee schedule.

• Fee-for-service rate: Published in the state Medicaid fee schedule. Look up HCPCS T2002 in your state agency’s online rate lookup tool
• MCO contract rate: Negotiated separately and may be higher or lower than the state fee schedule. The provider agreement governs it, not the Medicaid manual
• Broker fee structure: When a transportation broker manages NEMT, the state pays the broker a per-member-per-month (PMPM) or capitated rate. The broker then pays providers a contracted daily or per-trip rate, which may differ from both the fee schedule and the MCO rate
• Rate lookups: Search the AAPC HCPCS code lookup for descriptor context, then cross-reference your specific state Medicaid fee schedule portal for the dollar amount

Because NEMT is a historically high-fraud area flagged in OIG work plans, state programs audit trip-level documentation against paid claims. Reimbursement can be recouped on a post-payment audit if documentation does not support each billed trip.

Common T2002 claim denial reasons and how to fix them

T2002 denials cluster around four root causes: missing authorization, weak documentation, duplicate billing, and eligibility errors. Effective denial management in healthcare requires mapping each denial code to a specific corrective action rather than resubmitting the same claim unchanged.

Place of service codes for T2002 claims

Place of service (POS) 99, other place of service, is the POS state Medicaid programs such as Oregon’s assign to non-ambulance transportation, including T2002.

It describes the transport service itself, not the destination facility. POS 41 (ambulance, land) is reserved for a vehicle equipped and staffed for lifesaving, so it belongs on ambulance A-code claims.

The most common POS error on NEMT claims is entering the receiving facility’s POS. Examples are POS 11 for office and POS 22 for outpatient hospital.

• POS 99 (other place of service): The usual POS for non-ambulance NEMT, including T2002, when the vehicle is a car, van, or other light-duty transport
• POS 41 and 42 (ambulance, land and air or water): Only for genuine ambulance transport billed under the A-codes, such as A0425, A0427, and A0429
• State-specific POS: Some state Medicaid programs specify a different POS for certain transport modes or broker arrangements. Check the provider manual before defaulting to 99
• Destination POS is a separate field: On the CMS-1500 claim form, field 24B captures the POS for the service being billed, which is the transport. Do not confuse it with the destination facility’s POS

Incorrect POS is easy to miss in claim scrubbing because it does not always trigger a front-end edit. Many states catch it only on post-payment review, which leads to recoupment requests months after the original payment.

How to submit a T2002 claim: Step-by-step

Submitting a clean T2002 claim requires getting the sequence right. The same clean claim checks apply here as for any other code. Errors caught before submission cost nothing. Errors found after payment cost time, staff hours, and sometimes the payment itself.

1. Verify Medicaid eligibility: Run a real-time eligibility check for the beneficiary on the date of service before the trip departs. Confirm NEMT is a covered benefit under their specific plan or MCO.
2. Obtain prior authorization: Contact the state Medicaid program, MCO, or transportation broker and get the authorization number. Record it before the vehicle is dispatched.
3. Complete the trip log: For each trip, record the date, pickup address, destination, beneficiary name and Medicaid ID, and driver ID. Add departure and arrival times when the trip ends.
4. Assign the ICD-10 diagnosis code: Link the trip to the clinical reason for the appointment. Use the primary diagnosis from the treating provider’s referral or order.
5. Select T2002 with the correct modifier: Bill one unit per beneficiary per date of service, covering that day’s trips. Add TP, TQ, or state-specific modifiers only if the payer’s billing manual requires them.
6. Enter place of service 99: Set field 24B on the CMS-1500, or its 837P equivalent, to POS 99 unless your state specifies otherwise.
7. Submit to state Medicaid or MCO: Route the claim via the 837P electronic transaction through your clearinghouse, or via the state’s provider portal. Retain the confirmation number.

Check code details and descriptors with the PGM Billing HCPCS lookup tool or the NLM HCPCS code search API before finalizing the claim.

How Pabau keeps T2002 claims clean

Many NEMT billing teams track authorization numbers, eligibility checks and trip logs across separate spreadsheets and broker portals. That split makes it easy to send a T2002 per diem without its PA number. It also lets a T2003 line slip onto a day the per diem already paid.

In Pabau, the eligibility check, the authorization code and the claim sit on the same patient record. Its claims management software checks insurance eligibility before the trip and validates each claim before it goes to your clearinghouse.

Electronic remittance advice then posts against each claim line. Denial patterns show up across trips and dates of service, so your team fixes the cause once instead of appealing the same error every week.

Catch T2002 claim errors before submission

Pabau checks eligibility, stores prior authorization codes and validates every claim before it leaves. Your NEMT billing team spends less time chasing denials and more time getting paid.

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Conclusion

Before you bill a single T2002 unit, read your state fee schedule or MCO contract and settle whether it pays per day or per trip. That one answer decides every claim line that follows, and getting it wrong turns a whole month of trips into duplicate billing.

The trade-off is front-loaded work. Capturing the PA number, eligibility result and trip log before dispatch costs a few minutes per trip. A recoupment after an audit costs the payment itself.

If your team handles high-volume Medicaid transportation billing, book a demo to see how Pabau keeps each T2002 claim clean before it goes out.

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