CPT code 93619 denotes an intracardiac electrophysiology procedure in which multiple electrode catheters are inserted and repositioned in the right atrium, His bundle region, and right ventricle to evaluate abnormal cardiac rhythms. This code represents both technical and professional components of the diagnostic study and is integral to the identification and localization of arrhythmia sources. Nationally, electrophysiology studies are central to care pathways for syncope, palpitations, and complex arrhythmias and influence downstream therapeutic decisions such as ablation or device implantation.

Key payers included in analyses are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise synthesis of clinical context, common billing modifiers, typical sites of service, and the role of CPT code 93619 in the diagnostic workup of rhythm disorders. The publication provides benchmarks where available, summarizes relevant policy and coding considerations, and outlines coding relationships relevant to service lines that include cardiac electrophysiology and catheter-based diagnostics. Data not available in the input is noted when applicable.