A0100: Non-emergency transportation; taxi
A0100 is a HCPCS Level II code for non-emergency transportation; taxi. It belongs to the Transportation, Medical & Surgical Supplies, Administrative section. Medicare does not pay it: see the coverage note below before you bill it.
Medicare coverage: Not payable by Medicare
Medicare does not pay this code. It may still be valid for another payer, but a Medicare claim carrying it will not be reimbursed.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q4-Oct. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusI
Not valid for Medicare purposes. Medicare uses another code.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
Medically Unlikely Edits: units per day
The most units of A0100 Medicare will pay on one date of service. Bill more on a single line and it is denied. The limit is not the same in every setting, so the row that matters is the one matching the claim you are building.
- practitioner
- 0, never payable MAI 3: Date of Service Edit: Clinical · CMS Policy
- outpatient
- 0, never payable MAI 3: Date of Service Edit: Clinical · CMS Policy
The adjudication indicator decides whether exceeding the limit is worth appealing at all: MAI 1 is a line edit you can support with documentation, MAI 3 is a date-of-service edit that is also appealable, and MAI 2 is absolute, no documentation overrides it. CMS MUE 2026Q4.
The CMS record for A0100
- Long descriptor
- Non-emergency transportation; taxi
- Short descriptor
- Nonemergency transport taxi
- Added
- January 1, 1982
- BETOS
- O1A
- Pricing indicator
- 00: Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service: CMS's own analytic grouping.
Service not separately priced by Part B, not covered, bundled into another service, or used by Part A only.
Codes adjacent to A0100
HCPCS has no hierarchy: related items simply sit next to each other in the numbering. If A0100 is not quite right, the correct code is very often within a few positions of it.
- A0021Ambulance service, outside state per mile, transport (medicaid only)
- A0080Non-emergency transportation, per mile - vehicle provided by volunteer (individual or organization), with no vested interest
- A0090Non-emergency transportation, per mile - vehicle provided by individual (family member, self, neighbor) with vested interest
- A0110Non-emergency transportation and bus, intra or inter state carrier
- A0120Non-emergency transportation: mini-bus, mountain area transports, or other transportation systems
- A0130Non-emergency transportation: wheelchair van
- A0140Non-emergency transportation and air travel (private or commercial) intra or inter state
- A0160Non-emergency transportation: per mile - case worker or social worker
- A0170Transportation ancillary: parking fees, tolls, other
- A0180Non-emergency transportation: ancillary: lodging-recipient
- A0190Non-emergency transportation: ancillary: meals-recipient