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CPT code 93657: AF ablation, additional atrial lesions2026 Medicare rate & RVUs

Reports additional linear or focal left or right atrial ablation for atrial fibrillation after pulmonary vein isolation during a catheter ablation procedure.

CMS RVU26DEffective Oct 1, 2026109 payment localities61.9K Medicare services in 2024

Medicare pays $260.86 for 93657 nationally in a facility.

Medicare rate · 93657

AF ablation, additional atrial lesions

Office or facility?

Work RVUs
5.36
Total RVUs
7.81
Global days
ZZZ

National rate · 2026

$260.86

Facility setting, before claim adjustments.

See every locality for 93657 →Billed by an NP, PA or therapist? →

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

Medicare pays by the payment locality where the service is performed.

On this page 10 sections
  1. Medicare rate
  2. What 93657 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Related codes
  9. Billing questions
  10. Sources

What 93657 covers

Code 93657 describes additional catheter-based ablation in the left or right atrium to treat atrial fibrillation after pulmonary vein isolation has been completed. An electrophysiologist typically performs this work in an electrophysiology lab during an AF ablation, creating additional linear lesions or ablating focal targets beyond the pulmonary vein isolation itself.

Report 93657 as an add-on with the primary procedure, typically 93656; it is not reported by itself. The record should establish that pulmonary vein isolation was completed and describe the additional atrial ablation performed for AF, including the treated chamber and lesion or target. Medicare pays this add-on within the primary procedure’s global period.

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 93657 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

93657 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailable$237.52
AlaskaUnavailable$333.89
ArizonaUnavailable$253.53
ArkansasUnavailable$234.73
Atlanta, GAUnavailable$270.55
Austin, TXUnavailable$258.67
Bakersfield, CAUnavailable$251.46
Baltimore area, MDUnavailable$276.66
Beaumont, TXUnavailable$254.30
Brazoria, TXUnavailable$252.61

93657 rates by state

Office rate range in each state. Select a state to see its payment localities.

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Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

View every state and territory as a table
93657 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

How the 93657 rate is calculated

Each of 93657’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 · 93657

RVUs × geographic indexes × conversion factor

Office or facility?

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 93657

The CMS indicators that decide how 93657 is paid alongside other services.

CMS payment indicators · 93657

AF ablation, additional atrial lesions

RuleCMS valueWhat it means
Global periodZZZAdd-on code: falls within the primary procedure’s global period.
Multiple procedures0No multiple-procedure reduction.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)0Not paid without supporting documentation.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.

93657 compared with similar codes

Compare codes · National

5 codes, side by side

Office or facility?

  • 93657

    AF ablation, additional atrial lesions5.36 wRVU

    Not priced

  • 93656

    AF ablation, pulmonary vein isolation16.58 wRVU

    Not priced

  • 93655

    Catheter ablation, separate arrhythmia mechanism5.36 wRVU

    Not priced

  • 93653

    SVT ablation, comprehensive EP evaluation14.63 wRVU

    Not priced

  • 93654

    VT ablation, comprehensive EP evaluation17.65 wRVU

    Not priced

How to choose

93656AF ablationPulmonary vein isolation
93656 reports the primary AF ablation with pulmonary vein isolation. Use 93657 for additional linear or focal atrial ablation for AF performed after that isolation.
93655Catheter ablationSeparate arrhythmia mechanism
93655 addresses ablation of a distinct arrhythmia mechanism. 93657 is specific to additional left or right atrial ablation for AF after pulmonary vein isolation.
93653SVT ablationComprehensive EP evaluation
93653 is for comprehensive ablation treating supraventricular tachycardia; 93657 is an add-on for additional AF ablation following pulmonary vein isolation.
93654VT ablationComprehensive EP evaluation
93654 is for comprehensive ablation treating ventricular tachycardia. 93657 describes additional atrial ablation for AF after pulmonary vein isolation.

Codes related to 93657

Related codes aren’t interchangeable: bill the code that matches the service performed.

Codes related to 93657
CodeHow it relatesNational office range
Add-on codes
93656AF ablation, pulmonary vein isolationPrimary AF ablation procedure to which 93657 adds atrial ablation after pulmonary vein isolation.No office rate
Often billed with
93655Catheter ablation, separate arrhythmia mechanismMay describe ablation of a distinct arrhythmia mechanism during the same electrophysiology procedure.No office rate
936133D mapping, intracardiac electrophysiologyIntracardiac three-dimensional mapping may be performed during an AF ablation.No office rate
93662Intracardiac ultrasound, EP procedure imagingIntracardiac echocardiography may be used during catheter ablation.No office rate
Used instead
93653SVT ablation, comprehensive EP evaluationUsed for comprehensive ablation of supraventricular tachycardia rather than AF.No office rate
93654VT ablation, comprehensive EP evaluationUsed for comprehensive ablation of ventricular tachycardia rather than AF.No office rate

93657 billing questions

Can 93657 be reported without 93656?

No. It is an add-on code and must be billed with a primary procedure; 93656 is the primary AF ablation code associated with this additional work.

How is 93657 different from 93655?

93657 describes additional left or right atrial ablation for AF after pulmonary vein isolation. 93655 is used for ablation of a distinct arrhythmia mechanism during an electrophysiology procedure.

What documentation supports reporting 93657?

Document completion of pulmonary vein isolation and the additional linear or focal ablation performed for AF, including the atrial site and target.

Does every lesion after pulmonary vein isolation support 93657?

The additional work must be linear or focal atrial ablation performed to treat AF after pulmonary vein isolation. The record should identify that work rather than merely list lesion counts.

How does Medicare treat the add-on payment?

Medicare requires 93657 to be billed with a primary procedure and pays it within that procedure’s global period.

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
RVUs for 93657PPRRVU2026_Oct_nonQPP.csv, line 12,245 (RVU26D)

Open CMS sourceHow we calculate rates

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