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Official Description

Comprehensive electrophysiologic evaluation with transseptal catheterizations, insertion and repositioning of multiple electrode catheters, induction or attempted induction of an arrhythmia including left or right atrial pacing/recording, and intracardiac catheter ablation of atrial fibrillation by pulmonary vein isolation, including intracardiac electrophysiologic 3-dimensional mapping, intracardiac echocardiography with imaging supervision and interpretation, right ventricular pacing/recording, and His bundle recording, when performed

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A comprehensive electrophysiologic evaluation (EPS) is a specialized procedure designed to assess the electrical activity of the heart and identify any arrhythmias, particularly atrial fibrillation. This evaluation involves a series of intricate steps, including transseptal catheterizations, which allow access to the left atrium of the heart. During the procedure, multiple electrode catheters are inserted and repositioned to gather detailed information about the heart's electrical signals. The EPS not only aims to induce or attempt to induce an arrhythmia through left or right atrial pacing and recording but also includes right ventricular pacing and recording, as well as His bundle recording when necessary. The procedure begins with the insertion of catheters through the skin, typically via blood vessels in the groin, and these catheters are navigated into the heart chambers. Once in place, the recording electrode catheters monitor the heart's electrical activity, while the stimulating electrode catheters are used to pace the heart and induce arrhythmias. This comprehensive evaluation is crucial for understanding the mechanisms that trigger or sustain atrial fibrillation. Additionally, the procedure incorporates intracardiac echocardiography, which provides real-time imaging of the heart structures, and 3-dimensional mapping, which creates a detailed representation of the electrical activity within the heart. This mapping is essential for identifying the precise locations of abnormal electrical pathways. Following the evaluation, intracardiac catheter ablation is performed to isolate the pulmonary veins, a common source of atrial fibrillation. The ablation process involves applying energy to the targeted tissue to disrupt the abnormal electrical signals, thereby aiming to restore normal heart rhythm. Overall, this comprehensive electrophysiologic evaluation is a critical component in the management and treatment of atrial fibrillation.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The comprehensive electrophysiologic evaluation with catheter ablation is indicated for patients experiencing specific cardiac conditions. These include:

  • Atrial Fibrillation - A common type of arrhythmia characterized by rapid and irregular beating of the heart.
  • Recurrent Arrhythmias - Patients who have episodes of arrhythmias that are frequent and symptomatic may require this evaluation to determine the underlying causes.
  • Uncontrolled Heart Rate - Individuals with a heart rate that cannot be adequately controlled with medication may benefit from this procedure.

2. Procedure

The procedure involves several critical steps to ensure a thorough evaluation and effective treatment of atrial fibrillation:

  • Transseptal Catheterization - The procedure begins with transseptal catheterization, which allows access to the left atrium. This is achieved by puncturing the septum between the right and left atria, typically using a specialized needle and catheter.
  • Insertion and Repositioning of Electrode Catheters - Multiple electrode catheters are inserted through the blood vessels, usually from the groin, and navigated into the heart chambers. These catheters are repositioned as necessary to obtain optimal recordings and pacing from various sites within the heart.
  • Pacing and Induction of Arrhythmia - Once the catheters are in place, pacing is performed to induce or attempt to induce an arrhythmia. This involves delivering electrical impulses at different rates to stimulate the heart and provoke arrhythmias for study.
  • Intracardiac Electrophysiologic Mapping - During the procedure, intracardiac electrophysiologic 3-dimensional mapping is conducted. This involves simultaneous recordings from multiple electrodes to create a detailed computer reconstruction of the heart's electrical activity.
  • Intracardiac Echocardiography - Intracardiac echocardiography is performed to visualize the heart structures in real-time, aiding in the assessment of the anatomy and function of the heart during the procedure.
  • Ablation of Atrial Fibrillation - The final step involves the application of an ablation catheter to the targeted tissue around the pulmonary veins to achieve pulmonary vein isolation. This is done to disrupt the abnormal electrical signals that contribute to atrial fibrillation.

3. Post-Procedure

After the comprehensive electrophysiologic evaluation and ablation procedure, patients are typically monitored for any immediate complications. Post-procedure care may include observation in a recovery area, where vital signs are closely monitored. Patients may experience some discomfort at the catheter insertion sites, which usually resolves with time. Follow-up appointments are essential to assess the effectiveness of the procedure and to monitor for any recurrence of arrhythmias. Testing may be performed to ensure that the targeted pathways have been successfully ablated and that the arrhythmia cannot be reproduced.

Short Descr COMPRE EP EVAL ABLTJ ATR FIB
Medium Descr COMPRE EP EVAL ABLTJ ATR FIB PULM VEIN ISOLATION
Long Descr Comprehensive electrophysiologic evaluation with transseptal catheterizations, insertion and repositioning of multiple electrode catheters, induction or attempted induction of an arrhythmia including left or right atrial pacing/recording, and intracardiac catheter ablation of atrial fibrillation by pulmonary vein isolation, including intracardiac electrophysiologic 3-dimensional mapping, intracardiac echocardiography with imaging supervision and interpretation, right ventricular pacing/recording, and His bundle recording, when performed
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 0 - Payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Hospital Part B services paid through a comprehensive APC
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P2F - Major procedure, cardiovascular-Other
MUE 1
CCS Clinical Classification 225 - Conversion of cardiac rhythm

This is a primary code that can be used with these additional add-on codes.

93609 Addon Code MPFS Status: Carrier Priced APC N PUB 100 CPT Assistant Article Illustration for Code Intraventricular and/or intra-atrial mapping of tachycardia site(s) with catheter manipulation to record from multiple sites to identify origin of tachycardia (List separately in addition to code for primary procedure)
93622 Addon Code MPFS Status: Carrier Priced APC N PUB 100 CPT Assistant Article Illustration for Code Comprehensive electrophysiologic evaluation including insertion and repositioning of multiple electrode catheters with induction or attempted induction of arrhythmia; with left ventricular pacing and recording (List separately in addition to code for primary procedure)
93623 Addon Code MPFS Status: Carrier Priced APC N PUB 100 CPT Assistant Article Illustration for Code Programmed stimulation and pacing after intravenous drug infusion (List separately in addition to code for primary procedure)
93655 Addon Code MPFS Status: Active Code APC N Intracardiac catheter ablation of a discrete mechanism of arrhythmia which is distinct from the primary ablated mechanism, including repeat diagnostic maneuvers, to treat a spontaneous or induced arrhythmia (List separately in addition to code for primary procedure)
93657 Addon Code MPFS Status: Active Code APC N Additional linear or focal intracardiac catheter ablation of the left or right atrium for treatment of atrial fibrillation remaining after completion of pulmonary vein isolation (List separately in addition to code for primary procedure)
GC This service has been performed in part by a resident under the direction of a teaching physician
22 Increased procedural services: when the work required to provide a service is substantially greater than typically required, it may be identified by adding modifier 22 to the usual procedure code. documentation must support the substantial additional work and the reason for the additional work (ie, increased intensity, time, technical difficulty of procedure, severity of patient's condition, physical and mental effort required). note: this modifier should not be appended to an e/m service.
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
CR Catastrophe/disaster related
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
Q0 Investigational clinical service provided in a clinical research study that is in an approved clinical research study
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
53 Discontinued procedure: under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. this circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. note: this modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. for outpatient hospital/ambulatory surgery center (asc) reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
25 Significant, separately identifiable evaluation and management service by the same physician or other qualified health care professional on the same day of the procedure or other service: it may be necessary to indicate that on the day a procedure or service identified by a cpt code was performed, the patient's condition required a significant, separately identifiable e/m service above and beyond the other service provided or beyond the usual preoperative and postoperative care associated with the procedure that was performed. a significant, separately identifiable e/m service is defined or substantiated by documentation that satisfies the relevant criteria for the respective e/m service to be reported (see evaluation and management services guidelines for instructions on determining level of e/m service). the e/m service may be prompted by the symptom or condition for which the procedure and/or service was provided. as such, different diagnoses are not required for reporting of the e/m services on the same date. this circumstance may be reported by adding modifier 25 to the appropriate level of e/m service. note: this modifier is not used to report an e/m service that resulted in a decision to perform surgery. see modifier 57 for significant, separately identifiable non-e/m services, see modifier 59.
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
52 Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
74 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure after administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may terminate a surgical or diagnostic procedure after the administration of anesthesia (local, regional block(s), general) or after the procedure was started (incision made, intubation started, scope inserted, etc). under these circumstances, the procedure started but terminated can be reported by its usual procedure number and the addition of modifier 74. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier 53.
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
77 Repeat procedure by another physician or other qualified health care professional: it may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 77 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
78 Unplanned return to the operating/procedure room by the same physician or other qualified health care professional following initial procedure for a related procedure during the postoperative period: it may be necessary to indicate that another procedure was performed during the postoperative period of the initial procedure (unplanned procedure following initial procedure). when this procedure is related to the first, and requires the use of an operating/procedure room, it may be reported by adding modifier 78 to the related procedure. (for repeat procedures, see modifier 76.)
79 Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.)
82 Assistant surgeon (when qualified resident surgeon not available): the unavailability of a qualified resident surgeon is a prerequisite for use of modifier 82 appended to the usual procedure code number(s).
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
ET Emergency services
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GW Service not related to the hospice patient's terminal condition
HC Adult program, geriatric
KX Requirements specified in the medical policy have been met
LT Left side (used to identify procedures performed on the left side of the body)
PD Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days
Q5 Service furnished under a reciprocal billing arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
TG Complex/high tech level of care
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
Date
Action
Notes
2025-01-01 Changed Long Description changed.
2022-01-01 Changed Code description changed.
2017-01-01 Changed Moderate (Conscious) Sedation flag removed. See new Moderate Sedation category.
2014-01-01 Changed Description Changed
2013-01-01 Added Added
2013-01-01 Changed Long description revised per AMA corrections document dated 2013-03-12.
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