CPT code 36140 identifies arterial access in an upper or lower extremity for the purpose of injection. The code describes introduction of a needle or intracatheter into an extremity artery and is used across settings where arterial injections are performed, including ambulatory surgical centers, hospital outpatient departments, and inpatient care. Nationally, accurate reporting of this code matters for clinical documentation, appropriate service classification, and consistent payment for vascular access procedures.

Key payers referenced in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a focused overview of clinical context for arterial injection access, typical sites of service, and common billing considerations. The publication also provides benchmark comparisons, coding guidance context, and recent policy updates affecting arterial access services where available.

This summary equips clinicians, billers, and policy professionals with concise information about what CPT code 36140 represents, why correct use matters for reimbursement and reporting, and where to look for payer-specific rules. Data not available in the input is noted where relevant.