ModifiedBlue Cross Blue Shield - MassachusettsPolicy 126

Catheter Ablation for Cardiac Arrhythmias

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This policy governs medical necessity, coverage criteria, prior authorization, and coding for catheter ablation used to treat specified supraventricular and ventricular arrhythmias in eligible commercial and Medicare Advantage members. Catheter ablation for atrial fibrillation is excluded and addressed under Policy 141.

Policy Summary

PayerBlue Cross Blue Shield - Massachusetts

PolicyCatheter Ablation for Cardiac Arrhythmias

Policy CodePolicy 126

Change TypeReinstated

Effective DateDec 1, 2025

Last ReviewOct 1, 2026

Next Review DateNot specified

Key ActionObtain precertification or preauthorization for all inpatient services described in this policy.

SourceLink

POLICY UPDATE CHANGES

The policy was reinstated to describe medically necessary and investigational indications for catheter ablation.

Coding information was clarified.

>90%SVT ablation success

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ModifiedBlue Cross Blue Shield - MassachusettsPolicy 126

Catheter Ablation for Cardiac Arrhythmias

Customize your policy alerts

Sign up for Blue Cross Blue Shield - Massachusetts Policy 126 alerts

Get alerted when Policy 126 changes without checking for updates manually.

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Policy Summary

PayerBlue Cross Blue Shield - Massachusetts

PolicyCatheter Ablation for Cardiac Arrhythmias

Policy CodePolicy 126

Change TypeReinstated

Effective DateDec 1, 2025

Last ReviewOct 1, 2026

Next Review DateNot specified

Key ActionObtain precertification or preauthorization for all inpatient services described in this policy.

SourceLink

POLICY UPDATE CHANGES

The policy was reinstated to describe medically necessary and investigational indications for catheter ablation.

Coding information was clarified.

>90%SVT ablation success

80%-90%VT ablation success

3 episodes/24hVT storm threshold

1.3%Post-ablation stroke or TIA

Medical Necessity and Coverage Criteria

Supraventricular Tachyarrhythmias

Catheter ablation may be considered MEDICALLY NECESSARY as first-line treatment when ALL applicable criteria are met; failure of medical therapy is not required for the supraventricular tachyarrhythmias listed below.

ONE of the following

Treatment of paroxysmal supraventricular tachycardia due to atrioventricular nodal reentry tachycardia.
Treatment of paroxysmal supraventricular tachycardia due to accessory pathways.
Treatment of atrial flutter.
Treatment of focal atrial tachycardia.
Wolff-Parkinson-White (WPW) syndrome
- The individual is asymptomatic.
- The individual is at high risk of life-threatening arrhythmias, as determined by persistence of a delta wave during an exercise tolerance test in which a maximal heart rate is achieved.

Refractory Ventricular Tachycardia

Catheter ablation using radiofrequency energy may be considered MEDICALLY NECESSARY when ALL of the following are met:

ALL of the following

The individual has chronic, recurrent ventricular tachycardia.
The ventricular tachycardia is refractory to implantable cardioverter defibrillator treatment.
The ventricular tachycardia is refractory to antiarrhythmic medications.
An identifiable arrhythmogenic focus can be identified.

Ventricular Tachycardia Storm

Catheter ablation for ventricular tachycardia storm may be considered MEDICALLY NECESSARY when the following criterion is met:

ALL of the following

Pharmacologic treatment has been unsuccessful in controlling the arrhythmia.
Ventricular tachycardia storm, also known as incessant ventricular tachycardia, is defined as at least 3 episodes of sustained ventricular tachycardia in a 24-hour period. It is considered life-threatening and requires prompt attention and treatment.

Other Ventricular Arrhythmias

Catheter ablation for all other ventricular arrhythmias is considered INVESTIGATIONAL.

All ventricular arrhythmias not meeting the medically necessary criteria for refractory ventricular tachycardia or ventricular tachycardia storm are considered investigational.

Evidence-Supported: Ventricular Tachycardia Due to Structural Heart Disease

The evidence is sufficient to determine that catheter ablation results in a meaningful improvement in the net health outcome for drug- and implantable cardioverter defibrillator (ICD)-refractory ventricular tachycardia due to structural heart disease.

ALL of the following

The individual has ventricular tachycardia due to structural heart disease that is refractory to drug therapy and ICD treatment.
Evidence from 10 randomized controlled trials comparing catheter ablation with usual medical management, and 1 randomized controlled trial comparing catheter ablation with escalation of antiarrhythmic medications in patients with ventricular tachycardia and an automatic ICD, demonstrates procedural success of 80% to 90%.
Catheter ablation reduces the number of ventricular tachycardia episodes by approximately 30%.
Catheter ablation is associated with approximately a 50% reduction in inappropriate ICD interventions compared with usual medical management alone.

Evidence-Supported: Ventricular Tachycardia Storm

The evidence is sufficient to determine that catheter ablation results in a meaningful improvement in the net health outcome for ventricular tachycardia storm after failed pharmacologic treatment.

ALL of the following

The individual has ventricular tachycardia storm and has failed pharmacologic treatment.
Evidence from case series shows serious complications at reasonably low rates, with procedure-related mortality reported as 0.6% in a meta-analysis of case series.
Although comparative or randomized trial data are unavailable and are not expected because of the emergent nature of the condition, morbidity and mortality are expected to be extremely high after failure of pharmacologic therapy; catheter ablation is therefore expected to reduce morbidity and mortality.

Insufficient Evidence: Idiopathic Ventricular Tachycardia

The evidence is insufficient to determine the effects of catheter ablation on health outcomes for idiopathic ventricular tachycardia refractory to drug therapy and ICD placement.

ALL of the following

The individual has idiopathic ventricular tachycardia refractory to drug therapy and ICD placement.
The available evidence consists of a few case series, with no comparative or trial data; randomized controlled trials are unlikely given the rarity of the disease.
Although case series report high success rates and low adverse-event rates, the body of literature is small and insufficient to determine the effects of the technology on health outcomes.

This policy does not address catheter ablation for atrial fibrillation. Refer to Blue Cross Blue Shield of Massachusetts Medical Policy #141, Catheter Ablation as Treatment for Atrial Fibrillation, for coverage information.

Coding and Billing Information

Covered CPT CodesCPTCovered

93653	Comprehensive electrophysiologic evaluation including insertion and repositioning of multiple electrode catheters with 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) with intracardiac catheter ablation of arrhythmogenic focus; with treatment of supraventricular tachycardia by ablation of fast or slow atrioventricular pathway, accessory atrioventricular connection, cavo-tricuspid isthmus or other single atrial focus or source of atrial re-entry.
93654	Comprehensive electrophysiologic evaluation including insertion and repositioning of multiple electrode catheters with 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) with intracardiac catheter ablation of arrhythmogenic focus; with treatment of ventricular tachycardia or focus of ventricular ectopy including intracardiac electrophysiologic 3D mapping, when performed, and left ventricular pacing and recording, when performed.
93655	Intracardiac catheter ablation of a discrete mechanism of arrhythmia which is distinct from the primary ablated mechanism, including repeat diagnostic maneuvers, to treat a spontaneous or induced arrhythmia (List separately in addition to code for primary procedure).

Covered ICD-10 Diagnosis CodesICD-10Covered

I45.6	Pre-excitation syndrome
I47.0	Re-entry ventricular arrhythmia
I47.10	Supraventricular tachycardia, unspecified
I47.11	Inappropriate sinus tachycardia, so stated
I47.19	Other supraventricular tachycardia
I47.20	Ventricular tachycardia, unspecified
I47.21	Torsades de pointes
I47.22	Catecholaminergic polymorphic ventricular tachycardia [CPVT]
I47.29	Other ventricular tachycardia
I47.9	Paroxysmal tachycardia, unspecified

1–10 of 16

1/2

Ventricular Tachycardia Storm

DefinitionAt least 3 episodes of sustained ventricular tachycardia in a 24-hour period

Clinical significanceVentricular tachycardia storm is considered life-threatening

Required responseRequires prompt attention and treatment

High-Risk Asymptomatic WPW

Patient statusAsymptomatic Wolff-Parkinson-White syndrome

Risk classificationHigh risk of life-threatening arrhythmias

Exercise-test finding

Authorization, Documentation, and Coverage Actions

Prior Authorization

Inpatient Prior Authorization Required

Precertification/preauthorization is required for all products when a procedure described in this policy is performed on an inpatient basis.

Documentation Required

Distinguish First-Line SVT from Refractory VT

Catheter ablation may be considered first-line treatment for the covered supraventricular tachyarrhythmias; failure of medical therapy is not required. For chronic, recurrent ventricular tachycardia, coverage requires disease refractory to ICD treatment and antiarrhythmic medications, with an identifiable arrhythmogenic focus.

Covered supraventricular indications include AV nodal reentry tachycardia, accessory-pathway tachycardia, atrial flutter, focal atrial tachycardia, and specified high-risk asymptomatic WPW syndrome.

Clinical Background

Catheter ablation treats cardiac arrhythmias by using electrophysiologic study, imaging, and mapping to locate an arrhythmogenic focus and guide catheter placement. Energy sources such as radiofrequency or cryotherapy are then used to selectively destroy the involved cardiac myocardium or conduction-system tissue, eliminating the abnormal electrical pathway or focus.

Key Arrhythmia Definitions

Ventricular Tachycardia Storm

DefinitionAt least 3 episodes of sustained ventricular tachycardia in a 24-hour period

Clinical stateVentricular tachycardia storm is considered life-threatening

Treatment urgencyRequires prompt attention and treatment

Incessant Ventricular Tachycardia

Primary termVentricular tachycardia storm

Alternate termIncessant ventricular tachycardia

Definition linkageThe terms refer to the same clinical condition

Policy Summary

PayerBlue Cross Blue Shield - Massachusetts

PolicyCatheter Ablation for Cardiac Arrhythmias

Policy CodePolicy 126

Change TypeReinstated

Effective DateDec 1, 2025

Last ReviewOct 1, 2026

Next Review DateNot specified

Key ActionObtain precertification or preauthorization for all inpatient services described in this policy.

SourceLink

On This Page

The rate of serious procedural adverse events is low.

Although late recurrences occur, most patients treated with ablation remain free of ventricular tachycardia at 1- to 2-year follow-up, and 40% to 50% remain ventricular-tachycardia-free after 6 years of follow-up.

Compared with escalation of antiarrhythmic drug therapy, catheter ablation produces a 28% lower rate of the composite outcome of death, ventricular tachycardia storm, and appropriate ICD shock.

Persistence of a delta wave during an exercise tolerance test in which a maximal heart rate is achieved

Documentation Required

Document Arrhythmia-Specific Medical Necessity

Document the specific arrhythmia and medical-necessity facts supporting the request, including chronic, recurrent ventricular tachycardia, failure or refractoriness of antiarrhythmic medication and ICD treatment when applicable, and the identifiable arrhythmogenic focus. Include relevant device history, such as ICD placement and treatment.

Billing Rule

Support Billed Services with Policy Criteria and Benefits

Before billing, confirm that the service meets the policy’s medical-necessity criteria and that the billed procedure, revenue, diagnosis, and modifier codes are listed and reported using current industry standards. Code inclusion does not guarantee coverage or reimbursement; verify the member’s contract benefits in effect on the date of service.

The medical-necessity criteria must be met for the applicable codes to be covered.
Confirm individual member benefits and coverage or non-coverage before service or billing.

Denial Risk

Other Ventricular Arrhythmias Are Investigational

Catheter ablation for ventricular arrhythmias outside the policy’s covered chronic, recurrent refractory VT and ventricular tachycardia storm criteria is considered INVESTIGATIONAL.

Documentation Required

Refractory Ventricular Tachycardia Requirements

For catheter ablation of chronic, recurrent VT, document that the VT is refractory to both implantable cardioverter-defibrillator treatment and antiarrhythmic medications, and that an identifiable arrhythmogenic focus can be identified.

Required history: ICD treatment and antiarrhythmic medication therapy.
The VT must remain refractory despite those treatments.

Documentation Required

Ventricular Tachycardia Storm Criteria

For ventricular tachycardia storm, document unsuccessful pharmacologic treatment and confirm that the episode meets the policy definition of at least 3 episodes of sustained VT within a 24-hour period.

VT storm is also known as incessant VT and is considered life-threatening, requiring prompt attention and treatment.

Note

Atrial Fibrillation Is Outside This Policy

Atrial fibrillation ablation is outside the scope of this policy. For coverage information, refer providers to Blue Cross Blue Shield of Massachusetts Policy 141, Catheter Ablation as Treatment for Atrial Fibrillation.

Note

Insufficient Evidence for Idiopathic VT

For idiopathic VT refractory to drug therapy and ICD placement, the evidence is limited to a few small case series. Although these reports describe high success and low adverse-event rates, there are no comparative or trial data, and the evidence is insufficient to determine the technology’s effects on health outcomes.

Evidence base: a few case series.
No comparative or randomized trial data are available.
Health-outcome support is insufficient.

Drug- and ICD-Refractory VT

ConditionVentricular tachycardia

Drug responseHas not responded to drug therapy

Device-treatment responseHas not responded to implantable cardioverter-defibrillator treatment

VT Storm

Clinical stateVT involving failure of pharmacologic treatment

Treatment statusPharmacologic treatment has failed

Term usedVT storm