A0429
Ambulance Service, Basic Life Support (BLS), Emergency Transport
Code Description
HCPCS code A0429 is used to report Basic Life Support (BLS) emergency ground ambulance transportation. This code applies when a patient requires emergency transport by ambulance, but the level of care provided does not meet the requirements for Advanced Life Support (ALS). Mileage is reported separately using HCPCS code A0425.
When to Use A0429
Common examples include:
Emergency falls
Minor traumatic injuries
Stable fractures requiring ambulance transport
Syncope
Abdominal pain
Emergency transport without ALS interventions
Urgent medical evaluation
Documentation Requirements
Documentation should include:
Medical necessity for ambulance transport
Patient's emergency condition
Origin and destination
Ambulance trip report
Date of service
Complete transport documentation
Examples
Example 1
A patient falls at home and is unable to stand due to a suspected hip fracture. Emergency medical technicians provide Basic Life Support care and transport the patient by ground ambulance to the emergency department. HCPCS code A0429 is reported.
Example 2
A patient experiences severe abdominal pain and calls 911. Emergency medical technicians provide Basic Life Support monitoring during transport to the hospital without performing any ALS interventions. The ambulance provider reports HCPCS code A0429, with A0425 billed separately for mileage.
Common Billing Mistakes
Common billing mistakes include:
Billing A0429 when ALS services were provided
Failing to document medical necessity
Including mileage within the base transport code
Missing origin and destination modifiers
Inadequate ambulance trip documentation
Related HCPCS Codes
A0425
Ground Ambulance Mileage
A0427
Advanced Life Support (ALS), Level 1, Emergency Transport
A0428
Basic Life Support (BLS), Non-Emergency Transport
FAQ
What does HCPCS code A0429 cover?
HCPCS code A0429 reports Basic Life Support (BLS) emergency ground ambulance transportation.
What is the difference between A0429 and A0427?
A0429 is used for emergency Basic Life Support transports, while A0427 is reported when Advanced Life Support Level 1 services are provided during an emergency transport.
Is mileage included in A0429?
No. Mileage is billed separately using HCPCS code A0425.
When is A0429 commonly reported?
It is commonly reported for emergency ambulance transports that require Basic Life Support care but do not involve ALS assessments or interventions.
Code Type
Ground Ambulance
Service Level
Transport Type
Basic Life Support (BLS)
Emergency
