CPT code 93655: Catheter ablation, separate arrhythmia mechanism2026 Medicare rate & RVUs in Florida
Reports catheter ablation of an additional, distinct arrhythmia mechanism during a primary ablation procedure, such as atrial flutter treated during an atrial fibrillation ablation.
CMS doesn’t publish an office rate for 93655 in Florida.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
Your location
On this page 9 sections
What 93655 covers
An electrophysiologist reports this code when a catheter ablation session treats an arrhythmia mechanism distinct from the session’s primary ablation target. For example, an atrial flutter circuit may be treated during a procedure whose primary target is atrial fibrillation. The separate target must represent another mechanism, not simply additional lesions directed at the primary arrhythmia. These procedures are typically performed in a cardiac electrophysiology lab using intracardiac catheters and electrophysiologic mapping.
Report 93655 only with a qualifying primary ablation code: 93653, 93654, or 93656. The record should identify the separate arrhythmia mechanism and document its evaluation and ablation. This is an add-on service, not a stand-alone claim line; CMS pays it within the primary procedure’s global-period framework. Report the additional mechanism treated, rather than counting individual lesions as separate units.
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
Where 93655 pays more and less in Florida
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
| Payment locality | Office | Facility |
|---|---|---|
| Fort Lauderdale, FL | Unavailable | $295.65 |
| Miami, FL | Unavailable | $327.34 |
| Rest of Florida | Unavailable | $280.46 |
How the 93655 rate is calculated
Each of 93655’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.
How the rate is built · 93655
RVUs × geographic indexes × conversion factor
Work5.36
5.36 RVUs× 1.000 GPCI
Practice expense1.18
1.18 RVUs× 1.000 GPCI
Malpractice1.27
1.27 RVUs× 1.000 GPCI
Adjusted RVUs
7.8100
Conversion factor
$33.4009
Medicare rate
$260.86
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 93655
The CMS indicators that decide how 93655 is paid alongside other services.
CMS payment indicators · 93655
Catheter ablation, separate arrhythmia mechanism
| Rule | CMS value | What it means |
|---|---|---|
| Global period | ZZZ | Add-on code: falls within the primary procedure’s global period. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
93655 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 93653SVT ablationComprehensive EP evaluation
- 93653 describes the primary ablation for supraventricular tachycardia. Use 93655 only for an additional, distinct mechanism treated in the same session.
- 93654VT ablationComprehensive EP evaluation
- 93654 describes the primary ventricular tachycardia ablation. 93655 represents treatment of a separate arrhythmia mechanism in addition to that primary target.
- 93656AF ablationPulmonary vein isolation
- 93656 describes the primary atrial fibrillation ablation. Add 93655 when a distinct mechanism, such as a separate flutter circuit, is also ablated.
- 93657AF ablationAdditional atrial lesions
- 93657 is for additional atrial ablation directed at atrial fibrillation after the primary AF ablation; 93655 is for a distinct arrhythmia mechanism.
93655 billing questions
Which primary codes can accompany 93655?
Report it with 93653, 93654, or 93656. It is an add-on code and cannot stand alone.
Can 93655 be used for atrial flutter treated during an atrial fibrillation ablation?
Yes, when the flutter is a separately identified arrhythmia mechanism treated during the session, in addition to the primary atrial fibrillation target.
How is 93655 different from 93657?
93655 addresses ablation of a distinct arrhythmia mechanism. 93657 addresses additional atrial ablation for atrial fibrillation after the primary AF ablation.
Is 93655 reported for each lesion?
No. The code represents treatment of an additional discrete mechanism, not the number of lesions delivered.
What documentation supports 93655?
Document the separate arrhythmia mechanism, the findings that identify it, and the ablation performed for that target, alongside the primary ablation.
How does CMS handle payment for this add-on?
CMS pays 93655 within the primary procedure’s global-period framework. The code must be reported with a qualifying primary ablation.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.
CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027
Show the CMS file lines behind this rate
Fee sheets · Coming soon
Put 93655 and the rest of your codes on one sheet
Your codes at your locality, with payer contracts beside Medicare.
Join the waitlist