CPT code 93654 – Catheter ablation of ventricular tachycardia

Key takeaways

CPT code 93654 covers a comprehensive EP study with catheter ablation of ventricular tachycardia or a focus of ventricular ectopy.

The arrhythmia treated decides the code: 93653 is for SVT, 93654 for ventricular arrhythmias, and 93656 for atrial fibrillation.

93654 carries a 0-day global period. Confirm prior authorization and the ICD-10 pairing, most often I47.20 or I47.29, before the procedure date.

3D mapping and left ventricular pacing and recording are bundled into 93654 when performed, so neither is billed separately.

Pabau’s claims management software checks, submits and tracks 93654 claims from the patient record through to denial follow-up.

CPT code 93654: Definition and clinical description

CPT code 93654 is the comprehensive electrophysiology (EP) code for catheter ablation of ventricular tachycardia (VT) or a focus of ventricular ectopy. The American Medical Association descriptor runs as one long clause, so here it is in its parts. The code covers:

• Comprehensive electrophysiologic evaluation including insertion and repositioning of multiple electrode catheters
• Induction or attempted induction of an arrhythmia with right atrial pacing and recording
• Right ventricular pacing and recording (when necessary), and His bundle recording (when necessary)
• Intracardiac catheter ablation of arrhythmogenic focus, with treatment of ventricular tachycardia or focus of ventricular ectopy
• Intracardiac electrophysiologic 3D mapping, when performed
• Left ventricular pacing and recording, when performed

It is a comprehensive code, so these components count as one service and aren’t billed separately on the same date of service. Transseptal catheterization isn’t part of the 93654 descriptor, unlike 93656, which bundles it.

Most 93654 claims are VT ablations, often in patients with structural heart disease. The code also covers ablation of frequent premature ventricular contractions (PVCs) when they are the target.

Procedure description and clinical context

The EP study underlying 93654 follows a structured sequence. Coders need to understand each step because the operative note must reflect all of them for the claim to hold up at audit.

1. Vascular access and catheter insertion: Femoral access sites are established, often with additional venous or arterial access. Multiple electrode catheters are advanced to the right heart chambers and His bundle position.
2. Baseline electrophysiology measurements: AH and HV intervals, sinus node recovery time, and conduction parameters recorded at baseline.
3. Programmed stimulation and arrhythmia induction: Right ventricular extrastimulus protocol delivered to induce or attempt induction of the clinical arrhythmia.
4. Left ventricular access, when needed: A transseptal or retrograde aortic approach places a catheter in the left ventricle. LV pacing and intracardiac electrograms are recorded.
5. Electroanatomic mapping: The arrhythmia substrate is mapped in three dimensions to locate the ablation target. This 3D mapping is included in 93654.
6. Catheter ablation: Radiofrequency or other energy delivered at the target site; ablation catheter repositioned as needed until the arrhythmia is no longer inducible.
7. Post-ablation testing: Repeat programmed stimulation confirms the arrhythmia is no longer inducible. Final recordings are made before catheter removal.

The operative note has to name the ventricular arrhythmia that was ablated, because that diagnosis is what supports 93654 over 93653 or 93656. Record LV pacing and 3D mapping when they were performed, since an auditor will look for the work the code pays for.

In a hospital outpatient setting, the facility reports the mapping catheter on its own claim with device code C1732.

CPT 93654 vs. 93653 vs. 93656: Choosing the right code

The three primary ablation codes in the 93650-93657 family are each defined by the arrhythmia treated. The diagnosis in the note therefore points straight to the code, as the chart below shows.

93655 is an add-on code listed separately in addition to the primary ablation code. It applies when the electrophysiologist ablates a second, distinct arrhythmia mechanism during the same session. It cannot be billed as a standalone service.

Documentation requirements for CPT 93654

The operative or procedure note for CPT code 93654 must contain every element listed below. Medicare and commercial payer auditors check for each one. A missing element is treated as work that wasn’t done, even if it was.

• Access site and catheter count: Number and type of electrode catheters placed, access sites (femoral venous, femoral arterial, or other), and catheter positions documented.
• Baseline electrophysiology data: AH interval, HV interval, and baseline cycle lengths recorded.
• Programmed stimulation protocol: Extrastimulus protocol used, drive cycle lengths, and number of extrastimuli delivered.
• Arrhythmia induction: Whether the clinical arrhythmia was induced, with its morphology and cycle length, or induction was attempted without success.
• Arrhythmia treated: The ventricular arrhythmia or PVC focus targeted, with its morphology. This is what separates 93654 from 93653 and 93656.
• Left ventricular pacing and 3D mapping: Record both when performed. They are bundled into 93654, and an auditor checks the note for the work billed.
• Ablation target and energy delivery: Anatomic target site, energy type (radiofrequency, cryotherapy), power settings, duration, and number of lesions.
• Post-ablation testing: Repeat programmed stimulation results showing whether the arrhythmia can still be induced.
• Physician attestation: Attending electrophysiologist signature and direct supervision statement if a fellow was involved in catheter placement.

Modifiers for CPT code 93654

Modifier selection for CPT code 93654 depends on the billing setting and who owns the equipment. It also turns on NCCI edits with any companion codes billed that day.

Medicare reimbursement for CPT 93654 (fee schedule)

Medicare reimburses 93654 under the CMS Physician Fee Schedule. Payment is built from three relative value unit (RVU) components: work, practice expense and malpractice. Each is adjusted by the Geographic Practice Cost Index (GPCI) for the locality, then multiplied by the annual conversion factor.

Because 93654 carries a 0-day global period, no post-operative period bundles the follow-up visits. E&M services from the day after the ablation are billed separately with the appropriate office visit code.

Before quoting expected reimbursement, pull the current RVU values for 93654 from the FastRVU 2026 RVU lookup tool. Dollar amounts change every year and by GPCI locality, so a national average can mislead practices in high- or low-cost areas.

NCCI edits and bundling rules

The National Correct Coding Initiative (NCCI) bundles certain codes into 93654 as column-two codes. They can’t be billed separately on the same date unless a modifier is appended and the documentation justifies a distinct service.

• 93600 and 93602 (bundle): Basic EP study components are included in the comprehensive 93654. Billing them separately is a bundling violation.
• 93613 and 93622 (bundle): 3D mapping and left ventricular pacing and recording are part of 93654 when performed.
• 93603 and 93610 (bundle): Right ventricular recording and atrial pacing are incorporated into the comprehensive code.
• 93653 and 93656 (mutually exclusive): Neither can be billed with 93654 on the same date of service. Each covers a different arrhythmia type. Verify the current NCCI table before submitting, as the edits are updated quarterly.
• 93655 (add-on, billable): When an additional distinct mechanism is ablated in the same session, 93655 is listed separately with 93654 as the primary procedure.
• 93452 (left heart catheterization, sometimes separate): Modifier -59 may apply when a diagnostic left heart catheterization had its own indication. The note must document it apart from the EP study access. Verify the current-quarter NCCI edits.

A frequent bundling error is billing 93654 and 93653 together because the session treated both an SVT and a VT. Bill 93654 as the primary code with 93655 for the additional mechanism, never two primary ablation codes. A denial management workflow shows which NCCI pairs keep sending claims back for reprocessing.

ICD-10 codes commonly paired with CPT 93654

Payers judge medical necessity for CPT code 93654 by matching the ICD-10-CM diagnosis to the clinical indication. The diagnosis must support catheter ablation as an appropriate treatment. Many payers’ prior authorization criteria require documented failed antiarrhythmic drug therapy or a high-risk arrhythmia diagnosis.

Confirm every diagnosis code on a 93654 claim is current for the fiscal year. The October update can expand a code, as it did when I47.2 split into I47.20, I47.21 and I47.29. A non-billable header code is rejected on arrival.

Where coronary artery disease underlies the VT, I25.10 is the usual secondary code. Check current code status and crosswalks in AAPC’s CPT code lookup before the claim goes out.

Common denial reasons for CPT 93654 and how to appeal

CPT code 93654 claims tend to deny for five predictable reasons. Each one has a specific fix, set out below.

For bundling denials, read the remittance denial codes on the ERA before choosing an appeal path. A CO-97 means the service was bundled, while a CO-4 means a modifier is missing or wrong. Log each denial against its code, and the recurring documentation fault shows up in the note template.

How claims management software protects 93654 reimbursement

In many EP practices, a 93654 claim passes from the procedure note to a clearinghouse portal and then into a denial spreadsheet. Each handoff is a chance for a stale diagnosis code or a missing authorization number to slip through.

Pabau, the practice management and billing platform we build, keeps that work on the patient record. Its claims software for EP practices pre-fills each claim with patient, treatment and insurer details. Background checks flag missing membership numbers and authorization codes before the claim goes out.

Submissions run through Pabau’s Claim.MD integration, which reaches thousands of US insurance payers. Real-time eligibility checks confirm coverage before the procedure, and electronic remittance advice posts payments back against each claim. Denied claims are flagged on the claims dashboard, so your team can appeal while the case is still fresh.

Simplify CPT billing for your EP practice

Pabau helps cardiology and EP practices check eligibility, submit claims and track denials from one claims dashboard. See how it fits your 93654 workflow.

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Conclusion

CPT code 93654 gets paid when the note proves which ventricular arrhythmia was treated. Build the procedure note template around that diagnosis, and the choice against 93653 and 93656 stops depending on memory.

The trade-off is discipline before the procedure. Current ICD-10-CM pairings, a quarterly look at NCCI edits and prior authorization on file take minutes per case. Appealing a denied ablation takes weeks.

Put that discipline behind a clean claim process, and 93654 claims stop cycling through appeals. Book a demo to see how Pabau carries EP claims from the eligibility check to remittance.

Continue your research

Need guidance on medical billing compliance for your cardiology practice? Medical billing compliance covers the frameworks and audit-readiness steps that keep EP practices protected.

Want to understand how clearinghouse submissions work end to end? How a medical claims clearinghouse works explains the 837P submission path and what happens between your practice and the payer.

Looking to connect revenue cycle tracking to your billing workflow? What is revenue cycle management provides a foundation for building a denial-reduction strategy around CPT-heavy specialties like electrophysiology.

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