CPT code 93618: Arrhythmia induction, electrical pacing2026 Medicare rate & RVUs in California

CMS doesn’t publish an office rate for 93618 in California.

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

What 93618 covers

In an electrophysiology lab, a physician uses stimulation through intracardiac catheter electrodes to provoke an arrhythmia during diagnostic testing. The induced rhythm can help characterize an electrical abnormality in a patient being evaluated for a suspected arrhythmia. This code identifies induction by pacing, rather than pacing alone or recording electrical activity without induction.

Medicare assigns CPT 93618 physician fee schedule status C, or carrier priced: the Medicare Administrative Contractor sets payment for each claim. The diagnostic test has professional and technical components. Modifier 26 identifies the professional interpretation, modifier TC identifies the technical service, and reporting without either modifier represents the global service. The code has a 0-day global period, with same-day preoperative and postoperative care included.

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 93618 pays more and less in California

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

29 of 29 payment localities

How the 93618 rate is calculated

Each of 93618’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 93618

The CMS indicators that decide how 93618 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

93618 compared with similar codes

How to choose

93610Intracardiac pacingAtrial chamber

93610 identifies intra-atrial pacing. Use 93618 to identify pacing performed to provoke an arrhythmia.

93612Ventricular pacingElectrophysiology study

93612 identifies intraventricular pacing. Use 93618 to identify pacing performed to provoke an arrhythmia.

93619EP evaluationWithout arrhythmia induction

93619 is for a comprehensive EP evaluation, including induction performed as part of the study; 93618 identifies the induction service apart from a comprehensive evaluation.

93620EP evaluationRight-sided pacing

93620 is for a comprehensive EP evaluation, including induction performed as part of the study; 93618 identifies the induction service apart from a comprehensive evaluation.

Codes related to 93618

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

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