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

In Mississippi, Medicare pays $244.31 for 93657 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 93657 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

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.

How Mississippi compares for 93657

Across 109 of 109 payment localities, the facility rate for 93657 runs from $229.85 in Wisconsin to $333.89 in Alaska. Mississippi pays $244.31. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

93657 rates by state

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

See 93657 in every payment locality

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.

Payment rules and modifiers for 93657

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

Codes related to 93657

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

How 93657 has changed in Mississippi

Price 93657 for an earlier date of service

Where the Mississippi rate applies

Mississippi is a Medicare payment area, not a city. Our Census mapping connects it to 427 cities and communities in Mississippi. Some span more than one payment area; confirm with the service ZIP.

• Abbeville
• Aberdeen
• Ackerman
• Agricola
• Alcorn State University
• Algoma
• Alligator
• Amory

Browse all communities in Mississippi

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

Open CMS sourceHow we calculate rates