CPT 93653 Billing: SVT Ablation

Mukesh MakwanaFounder & CEO · Hands-on medical billing & RCM across 11 specialties · Reviewed September 28, 2026

CPT 93653 covers a comprehensive electrophysiology study performed with ablation of supraventricular tachycardia. The word doing the work is comprehensive: the diagnostic study and the 3D mapping are inside the code, and billing either separately is the most reliable denial on an EP claim.

What CPT 93653 covers

93653 is a 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 an arrhythmogenic focus, including intracardiac electrophysiologic 3-dimensional mapping, right ventricular pacing and recording, left atrial pacing and recording from the coronary sinus or left atrium, and His bundle recording, when performed, with treatment of supraventricular tachycardia.

It is the SVT code: ablation of a fast or slow atrioventricular pathway, an accessory atrioventricular connection, the cavo-tricuspid isthmus, or another single atrial focus or source of atrial re-entry.

What CPT 93653 already includes

93653 wraps the diagnostic electrophysiology study and the ablation of supraventricular tachycardia into one report. Since the CPT 2022 revision, the descriptor also absorbs services that used to be billed alongside it: insertion and repositioning of multiple electrode catheters, induction or attempted induction of the arrhythmia, intracardiac 3-dimensional mapping, right ventricular pacing and recording, and His bundle recording, when performed. It also includes left atrial pacing and recording from the coronary sinus or left atrium.

So 93613 (3D mapping) and 93621 (left atrial pacing) are not reported with 93653, and neither are the single-site EP studies (93600 to 93603, 93610, 93612, 93618) or the comprehensive studies 93619 and 93620. Only one primary ablation code is reported per session.

If your scrub rules still add 93613 to a 93653 claim, they are producing a denial on every case. Mapping is part of the ablation code now.

Add-on codes that may accompany 93653

93655: ablation of a discrete arrhythmia mechanism distinct from the primary mechanism, including repeat diagnostic maneuvers, in the same session.
93662: intracardiac echocardiography, when performed and documented with 93653.
93462: transseptal puncture, where performed with 93653. Hospital outpatient payment for it is packaged, so check how your setting reports it.
93657 is not one of them: it belongs with 93656.

Add-on codes never carry modifier 51 and never stand alone without 93653 on the claim.

Reimbursement context

2026 Medicare RVUs for CPT 93653

CPT 93653: 2026 Medicare RVUs (national, before GPCI)
Line	Work	PE, non-facility	PE, facility	Malpractice	Total, non-facility	Total, facility
Global (no modifier)	14.63	NA	3.22	3.45	NA	21.30

Source: CMS CY 2026 PFS Relative Value File, RVU26D (October release, published 08/26/2026). RVUs are national and unadjusted; commercial payers set their own rates.

In the 2026 CMS relative value file, CPT 93653 carries 14.63 work RVUs and 21.30 total RVUs. The non-facility column is NA: CMS values this procedure only for a facility setting such as a hospital. Its PC/TC indicator is 0: CMS treats it as a physician service, so modifiers 26 and TC do not apply in any setting. Its global period is 000: related work on the day of the procedure is included, with no postoperative days. Across the EP study and ablation codes, work RVUs run from 4.44 (93624) to 17.65 (93654); 93653 sits at 14.63.

To turn RVUs into payment, each component is multiplied by your locality's geographic practice cost index, the three are added, and the sum is multiplied by the 2026 conversion factor: $33.4009, or $33.5675 for qualifying APM participants (CMS-1832-F; CMS fact sheet). The CMS Physician Fee Schedule Look-Up Tool runs that calculation for your locality.

Documentation requirements

The arrhythmia being treated, named specifically, with its mechanism.
Catheters inserted and their positions.
Induction or attempted induction, and the response.
Pacing and recording performed at each site, noted even where the code includes it.
The ablation target, energy delivered and endpoint achieved.
Where a second distinct mechanism was treated, its identification as distinct from the primary.
Mapping and imaging performed, named specifically so the record shows what the comprehensive code covered.
A signed procedure note naming the study and ablation performed.

Common denials and the exact fix

CO-97: 3D mapping billed with 93613

The most common 93653 add-on error. Intracardiac electrophysiologic 3-dimensional mapping is named in the descriptor, so 93613 duplicates work already inside the code.

Fix: remove the 93613 line, and remove any scrub rule that adds it automatically to ablation claims.

Separate diagnostic EP study billed alongside 93653

The comprehensive code already contains the catheter insertion, induction and pacing and recording. The single-site studies (93600 to 93603, 93610, 93612, 93618) and the comprehensive studies 93619 and 93620 are included too.

Fix: remove the diagnostic study line. No modifier makes it payable, because it is not a distinct service.

Left atrial pacing billed with 93621

Left atrial pacing and recording from the coronary sinus or left atrium is named in the descriptor.

Fix: remove the 93621 line.

Second primary ablation code reported for another mechanism

Only one primary ablation code is reported per session.

Fix: report the additional distinct mechanism with the add-on 93655, and document why the second mechanism was distinct from the primary.

Intracardiac echo performed but not reported

Unlike 93656, this code does not include ICE, so a genuine capture is frequently left unbilled.

Fix: where ICE was performed and documented with imaging supervision and interpretation, report 93662 alongside 93653.

Arrhythmia mechanism not documented

The code turns on the mechanism treated. A note that records an ablation without naming the pathway or focus will not support it.

Fix: name the mechanism, the target and the endpoint achieved.

Modifier rules

51: never appended to the add-on codes billed with 93653, which are exempt from multiple-procedure reduction.
59 / XE / XP / XS / XU: never a route to reporting mapping, left atrial pacing or a diagnostic EP study that 93653 already includes.
26 / TC: not used. CMS gives CPT 93653 a PC/TC indicator of 0 (physician service), so it is billed without a component modifier in every setting, including the hospital.
22: increased procedural services on 93653, requiring a narrative and manual review.
53: discontinued procedure, where the 93653 procedure was stopped after the patient was prepared.
78 / 79: return to the procedure room during the 93653 global day, related or unrelated.

NCCI bundling edits

93653 with 93613: 3D mapping is included. This pairing denies.
93653 with 93621: left atrial pacing and recording is included.
93653 with a separate diagnostic EP study (93600 to 93603, 93610, 93612, 93618, 93619, 93620): included in the comprehensive code.
93653 with 93654 or 93656: mutually exclusive. One primary ablation code per session.
93653 with 93655, 93662: separately reportable where documented.
Vascular access, guidance and closure are included.

Frequently asked questions

Is 3D mapping (93613) separately billable with CPT 93653?

No. The 93653 descriptor includes intracardiac electrophysiologic 3-dimensional mapping, so 93613 duplicates work inside the code and denies. The descriptor was revised in CPT 2022 to absorb it. Billing systems that still add 93613 to ablation claims produce a denial on every case.

Can I bill a diagnostic EP study with CPT 93653?

No. 93653 is a comprehensive code that already includes the catheter insertion and repositioning, induction or attempted induction of the arrhythmia, and the pacing and recording. The single-site EP studies and the comprehensive study codes are included, and no modifier makes them payable because they are not a distinct service.

How do I report a second arrhythmia treated in the same session?

With the add-on code 93655, which covers ablation of a discrete mechanism distinct from the primary mechanism. A second primary ablation code is not reported for the same session, and the note must establish that the second mechanism was genuinely distinct.

Is intracardiac echocardiography separately reportable with 93653?

Yes, where it was performed and documented with imaging supervision and interpretation, using add-on 93662. This differs from 93656, whose descriptor already includes intracardiac echocardiography.

Sources

American Medical Association, CPT 2026 Professional Edition.
Centers for Medicare & Medicaid Services, CY 2026 PFS Relative Value File RVU26D (October release): RVUs, PC/TC indicator and global period for CPT 93653.
Centers for Medicare & Medicaid Services, CY 2026 Physician Fee Schedule final rule, CMS-1832-F: conversion factors.
Centers for Medicare & Medicaid Services, National Correct Coding Initiative Policy Manual for Medicare Services and quarterly procedure-to-procedure edit tables.
Johnson & Johnson MedTech, 2026 Electrophysiology Reimbursement and Coding Guide (reproduces the CPT 2026 descriptors and cites CMS-1832-F).

CPT® is a registered trademark of the American Medical Association. Payer policy and NCCI edits change quarterly, so check your own contractor before submission. How we verify this guidance.

Related codes

CPT 93654. EP study with VT ablation.
CPT 93656. EP study with AF ablation by pulmonary vein isolation.
CPT 93650. AV node ablation.

More cardiology code guides

CPT 93306. Complete TTE with spectral and color flow Doppler.
CPT 93307. Complete TTE without Doppler.
CPT 93308. Limited or follow-up echo.

CPT 93653: Comprehensive EP Evaluation With Supraventricular Tachycardia Ablation