Summary & Overview
CPT 93655: Post‑Ablation Electrophysiology Study with Ablation
CPT code 93655 represents a post‑ablation cardiac electrophysiology study with additional ablation as needed to assess and treat residual sources of arrhythmia. This invasive catheter‑based procedure evaluates electrical activity after an initial ablation and targets remaining abnormal pathways or foci. It is clinically important because it helps confirm procedural success, reduces recurrent arrhythmia, and can inform further treatment decisions. Nationally, management of atrial and ventricular arrhythmias and use of repeat or adjunctive ablation procedures are significant drivers of procedural cardiac care.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical intent and settings for CPT code 93655, typical sites of service, common modifiers associated with procedural billing (listed separately), and the context needed to interpret utilization and coverage discussions. The publication also outlines expected clinical workflow for catheter access and intra‑cardiac mapping, and highlights where readers can expect variation in coverage policy and reimbursement practice across major national payers.
This summary serves clinicians, billing staff, and policy analysts who need a focused national perspective on CPT code 93655, its clinical role following cardiac ablation, and where to look for payer‑specific policy details and benchmarks.
Billing Code Overview
CPT code 93655 describes an electrophysiology procedure performed after a cardiac ablation to test the effectiveness of the ablation and to identify any remaining areas responsible for abnormal heart rhythms. The provider accesses the heart via catheter introduced through the femoral vein in the groin, records electrical activity, and applies energy to ablate targeted myocardial tissue.
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Service type: Cardiac electrophysiology study with ablation (post‑ablation evaluation and additional ablation as indicated)
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Typical site of service: Hospital inpatient or outpatient electrophysiology laboratory or cardiac catheterization lab
Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with symptomatic paroxysmal atrial fibrillation is referred for catheter ablation. The electrophysiologist performs percutaneous femoral venous access, advances mapping and ablation catheters into the left atrium via transseptal puncture, and performs radiofrequency or cryothermal pulmonary vein isolation. After initial lesion sets, the provider performs intra-procedural testing of electrical activity to assess the effectiveness of ablation and to identify any additional arrhythmogenic foci or conduction gaps. This includes programmed electrical stimulation, pacing, and electroanatomic mapping with intracardiac recordings to confirm isolation of targeted areas and to guide additional focal ablation as needed. Hemostasis of groin access sites is achieved and the patient is monitored in a post-anesthesia care or cardiac observation unit prior to discharge or overnight admission depending on clinical status.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Normally expected procedural service | Use when this procedure is the primary and most significant service provided on the same day. |
22 | Increased procedural services |