Ambulance Transport
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Defines medical necessity, coverage, and billing expectations for emergent and non-emergent ground and air ambulance transport for Providence Health Plan members across applicable product lines.
No material clinical or coverage changes in this revision.
Coverage Criteria for Ambulance Transport
Emergent/Urgent Ground Ambulance
Covered when ALL of the following are met
Examples include transport from the scene of an accident or acute event, unconsciousness or shock, respiratory or cardiac distress, symptoms of possible stroke, severe hemorrhaging. Transport to a physician's office (destination modifier 'P') is not considered emergent/urgent.
Non-Emergent/Non-Urgent Ground Ambulance
Considered medically necessary when ALL of the following (A-C) are met
Approved destinations listed in C; all three A–C must be met.
Emergent/Urgent Air Ambulance
May be medically necessary when ALL of the following are met
Examples of life-threatening conditions and reasons ground transport is unsafe are provided under Medical Reasonableness.
Non-Emergent/Non-Urgent Air Ambulance
May be medically necessary when ALL of the following (A-E) are met
All five criteria A–E must be met; exceptions to nearest-facility requirement may be considered by medical director.
Ambulance Services for the Deceased
Pronouncement of death must be made by an individual authorized under state law.
Coverage differs by timing of pronouncement relative to dispatch, take-off, loading, and arrival.
Air ambulance covered criteria
Air ambulance is covered only when ALL of the following apply:
Policy review considerations and medical reasonableness examples inform assessment (e.g., intracranial bleeding, cardiogenic shock, multiple severe injuries, transplant, neonatal emergencies).
The policy lists several non-covered / not medically necessary transport situations. These include transport from a location that is capable of treating the member's condition; transport to/from locations when the member is physically and mentally capable of riding as a passenger in a private vehicle; roundtrip residence-to-provider travel for routine appointments (unless specifically covered, e.g., dialysis); transports performed primarily for the convenience of the member, family, physician, or provider; air ambulance transport to non-acute care destinations absent Plan review/approval; use of non-ambulance modes of transport (private vehicle, commercial airline, taxi, rideshare, public transit, etc.); transports for services that are not covered; transport of ambulance staff without a patient onboard; and ambulance services when the origin or destination are not covered locations.
Air ambulance is limited to life‑threatening emergencies or transfers justified by clinical need when ground ambulance is unavailable or would pose an unreasonable risk of harm from increased travel time. The Plan explicitly states that air ambulance transportation for non‑emergency situations is not covered unless the exception for unavailable or dangerous ground transport applies; air transport solely for personal comfort or convenience is not covered.
When no transport occurs, do not report ground/air transport HCPCS codes (for example, A0428/A0429). Instead use a non‑transport HCPCS code such as A0998. Inclusion of a code in the policy does not guarantee coverage. All services and unlisted codes are subject to review for medical necessity, correct coding, and pricing; unlisted codes for potentially covered services are recommended to have prior authorization to avoid post‑service denial.
Examples of explicit non‑covered conditions include transports from locations capable of treating the condition; transports when the member is able to ride as a passenger in a private vehicle; roundtrip residence‑to‑provider transports for routine appointments (unless specifically covered); transports performed mainly for convenience; air ambulance to non‑acute care destinations without Plan approval; non‑ambulance modes of transport (commercial airline, taxi, rideshare, public transit, private vehicles); transport of staff without a patient; and ground services when the patient died before transport and before dispatch.
Additional examples of non‑coverage include situations where a commercial flight or other non‑ambulance means could safely accomplish the transport, or where transport is to a facility that is not the nearest appropriate facility without justification. The policy reiterates that ambulance transportation solely for personal comfort or convenience is not covered, and that incorrect origin/destination modifier combinations may indicate transports unlikely to meet coverage criteria.
Coding and Mileage Reporting
| A0427 | Ambulance service, advanced life support, emergency transport, level 2 (example emergency transport HCPCS referenced) |
| A0429 | Ambulance service, ground, advanced life support, non-emergency transport / emergency transport (example emergency transport HCPCS referenced) |
| A0426 | Ambulance service, basic life support, non-emergency transport (example non-emergency HCPCS referenced) |
| A0428 | Ambulance service, basic life support, emergency/non-emergency (example non-emergency HCPCS referenced) |
| A0430 | Air ambulance service, fixed wing, transport (referenced for emergent and non-emergent air transport) |
| A0431 | Air ambulance service, rotary wing, transport (referenced for emergent and non-emergent air transport) |
| A0430 | Fixed wing air transport |
| A0431 | Rotary wing air transport |
| A0425 | Emergency transportation: Ambulance service- neonatal transport |
| A0427 | Ambulance service, Advanced Life Support (ALS), emergency transport, Level 1 |
| A0428 | Ambulance service, Basic Life Support (BLS), non-emergency transport |
| A0429 | Emergency transportation: Ambulance service- Basic Life Support (BLS) |
| A0433 | Ambulance service - Advanced Life Support (ALS), level 2 |
| A0225 | Ground ambulance transport and mileage codes (listed in document) |
| A0425 | Ground mileage, per statute mile (as referenced) |
| A0998 | Ambulance response and treatment, no transport |
Provider Actions, Prior Authorization & Documentation
Prior authorization not required for urgent/emergent transports; non-emergent may require PA
Prior authorization is not required for urgent/emergent ambulance transports, including air ambulance; non-emergent transports may require review/authorization per plan benefits. Emergent/urgent transports may still be reviewed post-service for medical necessity.
- Do not submit PA for clearly urgent/emergent transports (ground or air).
- For non-emergent transports, check member benefits and obtain PA when the plan requires it.
HCPCS codes may not routinely require PA; unlisted/potentially covered services should be reviewed
HCPCS ambulance codes may not routinely require prior authorization, but unlisted codes (and services that are only potentially covered) should be reviewed or have PA to avoid post-service denial; coverage criteria apply regardless of the HCPCS code used.
- If submitting an unlisted code (e.g., A0998) or other potentially covered service, consider obtaining prior authorization.
- Coverage and medical necessity rules are applied during review even if a specific HCPCS code does not routinely require PA.
No step therapy specified
No step therapy is specified in this policy for ambulance transport services.
Obtain review/PA for unlisted or exceptional services
If using unlisted, unusual, or exceptional service codes or submitting transports that are borderline, obtain prior authorization and include full supporting documentation to reduce risk of denial on review.
- Unlisted codes are reviewed at claim level for medical necessity and correct coding.
- Prior authorization is recommended for potentially covered but unlisted services to avoid post-service denial.
Documentation must support unique clinical circumstances; physician order alone insufficient
Documentation must demonstrate the unique clinical circumstances that justify non-emergent ambulance use; the presence of a physician order alone does not establish medical necessity.
- Coverage decisions for non-emergent transports are made case-by-case at medical director discretion.
Include run sheets, PCS, charges, mileage and detailed clinical information
Submit complete ambulance records and clinical detail with requests or claims to support medical necessity and to avoid delays or denials.
- Run sheets and Physician Certification Statements (PCS).
- Procedures/supplies used, base charge, mileage (number of loaded miles) and itemized charges.
- Detailed medical information: objective signs/symptoms, history, mobility/functional/mental status, on-scene assessment, treatments and responses.
- Point of pick-up and destination names/addresses and, for hospital transfers, reason patient could not be treated at current hospital.
Post-service review may deny emergent transports lacking supporting documentation
Urgent/emergent transports may be subject to post-service review; if documentation does not support medical necessity, the claim may be denied even when transport was emergent.
- Keep complete run sheets and clinical records available for post-service medical necessity review.
Incorrect origin/destination modifiers may trigger denials
Claims with incorrect or implausible origin/destination modifier combinations (for example, 'S' as a destination or 'X' in an origin position) or other improper modifier use are not likely to meet medical policy criteria and may deny.
- Report each leg of transport as a separate line with appropriate origin & destination modifiers.
- Verify modifiers: 'S' (scene) should not be used as a destination; 'X' is a destination-only modifier.
Unlisted codes can be denied if service is non-covered; seek PA for potentially covered unlisted codes
Unlisted HCPCS codes submitted for services that are non-covered under this policy will be denied as not covered; for unlisted codes representing potentially covered services, prior authorization is recommended to avoid post-service denial.
- All unlisted codes are reviewed for medical necessity, correct coding, and pricing at the claim level.
- If an unlisted code is used for a potentially covered service, obtain PA when appropriate.
Background
Ambulance transport services are categorized as emergent/urgent or non‑emergent/non‑urgent for both ground and air. Emergent or urgent transports are provided when other modes of transportation would endanger the member's health and immediate transport to the nearest facility capable of treating the condition is required (examples include unconsciousness, shock, respiratory or cardiac distress, or suspected stroke). Non‑emergent transports are for clinically stable members who nonetheless require ambulance‑level services (for example, stretcher‑only movement, need for cardiac monitoring/IV/oxygen, or bed‑confined status) and who are being moved to an appropriate approved destination.
Definitions
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