ModifiedColorado Rocky Mountain Health PlansPolicy 2026T0609R

Catheter Ablation for Atrial Fibrillation

Defines UnitedHealthcare commercial and individual exchange coverage policy for catheter ablation to treat atrial fibrillation, including age limits, applicability to arrhythmia types, reference to InterQual clinical criteria, and a specific exclusion for asymptomatic AF with LVEF > 40%.

Policy Summary

PayerColorado Rocky Mountain Health Plans

PolicyCatheter Ablation for Atrial Fibrillation

Policy CodePolicy 2026T0609R

Change TypeModified — exclusion added

Effective DateJun 1, 2026

Next Review Date

Key ActionMedical records documentation may be required and providers should apply InterQual clinical criteria when requesting authorization.

POLICY UPDATE CHANGES

Added language that catheter ablation for treating asymptomatic atrial fibrillation in individuals with a left ventricular ejection fraction greater than 40% is unproven and not medically necessary.

Added definition of 'Heart Failure With Reduced Ejection Fraction'.

Added Description of Services and Clinical Evidence sections and updated References.

Archived previous policy version 2026T0609Q.

1Primary exclusion added

4CPT codes referenced

yesMaterial change

Coverage Summary

This policy defines UnitedHealthcare Commercial and Individual Exchange coverage for catheter ablation to treat atrial fibrillation. It applies to UnitedHealthcare Commercial and Individual Exchange benefit plans and does not apply to members aged < 18 years or to arrhythmias other than atrial fibrillation. Coverage where proven or medically necessary is determined by meeting InterQual CP clinical criteria for electrophysiology procedures and catheter ablation.

Catheter ablation is intended for patients with symptomatic atrial fibrillation and for patients with heart failure with reduced ejection fraction (defined as Left ventricular ejection fraction ≤ 40%), where evidence and guidelines support use to improve outcomes. The policy specifically excludes catheter ablation for treating asymptomatic atrial fibrillation in individuals with a left ventricular ejection fraction greater than 40%, stating this indication is unproven and not medically necessary due to insufficient evidence of efficacy.

Medical Necessity and Applicability Criteria

General Applicability and Age Exclusion

Policy scope and exclusions:

ALL of the following

Applies to UnitedHealthcare Commercial and Individual Exchange benefit plans
Does not apply to members aged < 18 years
Does not apply to arrhythmias other than atrial fibrillation

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Coverage Where Proven / Medically Necessary

Catheter ablation is considered proven and medically necessary in certain circumstances; applicability determined by InterQual CP criteria:

ALL of the following

Member must meet medical necessity clinical coverage criteria as defined in InterQual CP: Procedures, Electrophysiology (EP) Testing +/- Catheter Ablation, Cardiac (linked in policy)

Not Medically Necessary / Unproven Indication

Coverage exclusion:

ALL of the following

Catheter ablation for treating asymptomatic atrial fibrillation in individuals with a left ventricular ejection fraction greater than 40% is unproven and not medically necessary due to insufficient evidence of efficacy

Provider Actions and Billing Guidance

Prior Authorization

Coverage determined by InterQual clinical criteria

Coverage determinations reference InterQual CP: Procedures, Electrophysiology (EP) Testing +/- Catheter Ablation, Cardiac; providers should apply InterQual criteria when requesting authorization.

InterQual CP: Procedures, Electrophysiology (EP) Testing +/- Catheter Ablation, Cardiac
See linked InterQual criteria and authorization guidance in the policy

Documentation Required

Medical record documentation may be requested

Medical records documentation may be required to assess whether the member meets the clinical criteria for coverage; presence of documentation does not guarantee coverage and member-specific benefit plan governs.

Billing Rule

Coding clarification regarding CPT 93653 and 93656

Per AMA guidelines, CPT code 93653 should not be reported in conjunction with 93656.

93653
93656

Relevant Codes

Relevant CPT procedure codes (reference list)CPT

93653	Comprehensive electrophysiologic evaluation with insertion and repositioning of multiple electrode catheters, induction or attempted induction of an arrhythmia with right atrial pacing and recording and catheter ablation of arrhythmogenic focus... (see policy for full description)
93655	Intracardiac catheter ablation of a discrete mechanism of arrhythmia which is distinct from the primary ablated mechanism (list separately)
93656	Comprehensive electrophysiologic evaluation with transseptal catheterizations... and intracardiac catheter ablation of atrial fibrillation by pulmonary vein isolation... (see policy for full description)
93657	Additional linear or focal intracardiac catheter ablation of the left or right atrium for treatment of atrial fibrillation remaining after completion of pulmonary vein isolation (list separately)

Clinical Evidence and Definitions

Catheter ablation is a procedure that destroys areas of heart tissue causing arrhythmia using energy sources such as radiofrequency, cryothermal (cryoablation), or pulsed field (electrical) ablation; it may restore regular heart rhythm. Clinical evidence and guidelines support ablation for symptomatic patients and for those with heart failure with reduced ejection fraction (≤ 40%), showing improvements in survival, heart failure hospitalization, left ventricular function, symptoms, and quality of life. However, evidence is insufficient to support catheter ablation for asymptomatic atrial fibrillation with LVEF > 40%, and this use is considered unproven and not medically necessary.

Study / Source	Key finding
CASTLE-AF trial finding	Ablation in participants with impaired LV systolic function was associated with a significantly lower rate of a composite of death and hospitalization for heart failure versus medical therapy (Marrouche et al., 2018).
Meta-analyses	Pooled randomized data indicate improved survival, reduced heart failure rehospitalization, improved left ventricular function and quality of life with ablation in AF with HFrEF (Zhang et al., 2024; Chen et al., 2020).

Definitions and threshold note

Definition - Heart Failure With Reduced Ejection FractionA left ventricular ejection fraction of less than or equal to 40%.

Threshold noteLVEF <= 40% indicates HFrEF; catheter ablation for asymptomatic AF with LVEF > 40% is unproven and not medically necessary due to insufficient evidence.

Revision History

2026-06-01addedLatest

Added language that catheter ablation for treating asymptomatic atrial fibrillation in individuals with a left ventricular ejection fraction greater than 40% is unproven and not medically necessary.

2026-06-01added

Added definition of 'Heart Failure With Reduced Ejection Fraction' (LVEF <= 40%).

2026-06-01added

Added Description of Services and Clinical Evidence sections and updated References.

2026-06-01archived

Archived previous policy version 2026T0609Q.

Policy Summary

PayerColorado Rocky Mountain Health Plans

PolicyCatheter Ablation for Atrial Fibrillation

Policy CodePolicy 2026T0609R

Change TypeModified — exclusion added

Effective DateJun 1, 2026

Next Review Date

Key ActionMedical records documentation may be required and providers should apply InterQual clinical criteria when requesting authorization.

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