A0021 Outside state ambulance serv
Also known as: out-of-state ambulance, inter-state transport
Ambulance service provided outside the state where the patient is located; used for inter-state medical transport.
In Plain Language
ambulance ride to hospital in another state
Clinical Context
Used for ambulance services when patient is transported across state lines; typically for regional trauma centers or specialty care facilities.
RVU Information
CPT A0021 does not have a physician work RVU assigned by CMS. This is typical for supply, drug, and equipment codes — reimbursement is based on Average Sales Price (ASP), fee schedules, or payer contracts rather than the RVU system.
Billing & Documentation
HCPCS A-codes cover medical supplies, equipment, and transport services. Documentation must establish medical necessity and include a physician order. For durable medical equipment (DME), a Certificate of Medical Necessity (CMN) or detailed written order may be required.
Specialties
Frequently Asked Questions
What is CPT code A0021?
CPT A0021 (Outside state ambulance serv) is a A Codes code. Ambulance service provided outside the state where the patient is located; used for inter-state medical transport.
Does Medicare cover A0021?
Medicare coverage for A0021 depends on medical necessity and applicable Local Coverage Determinations (LCDs). Used for ambulance services when patient is transported across state lines; typically for regional trauma centers or specialty care facilities. A physician order is typically required.
When is CPT A0021 used?
Used for ambulance services when patient is transported across state lines; typically for regional trauma centers or specialty care facilities.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.