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Official Description

Insertion of epicardial electrode(s); open incision (eg, thoracotomy, median sternotomy, subxiphoid approach)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 33202 involves the insertion of epicardial electrode(s) through an open incision, which may be performed via various surgical approaches such as thoracotomy, median sternotomy, or subxiphoid approach. Epicardial electrodes, also referred to as leads, are specialized devices that are placed on the outer surface of the heart muscle to facilitate electrical stimulation. This procedure is typically indicated for patients requiring cardiac pacing or defibrillation support, where the electrodes are strategically positioned to ensure optimal functionality based on the type of device being utilized. For instance, a single chamber permanent pacemaker necessitates the placement of one electrode either in the atrium or ventricle, while a dual chamber device requires one electrode in each of these heart chambers. The surgical process involves opening the chest cavity to expose the heart, allowing for precise placement and secure attachment of the electrodes to the heart muscle. Following the positioning of the leads, a subcutaneous tunnel is created to connect the electrodes to the device generator, which is usually implanted beneath the skin in the chest area or upper abdomen. The leads are then tested for proper function before the surgical incision is closed. It is important to note that this code specifically pertains to the insertion of the epicardial electrode lead(s) and does not include the generator itself, which is reported separately under different coding guidelines.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The insertion of epicardial electrode(s) via an open incision is indicated for various cardiac conditions that require electrical stimulation of the heart. The following are the primary indications for this procedure:

  • Cardiac Pacing: Patients with bradycardia or other arrhythmias that necessitate the use of a permanent pacemaker for maintaining adequate heart rate and rhythm.
  • Cardiac Resynchronization Therapy: Individuals with heart failure who may benefit from dual chamber pacing to improve cardiac function and synchronize the contractions of the heart chambers.
  • Defibrillation Support: Patients at risk of life-threatening arrhythmias who require a pacing cardioverter defibrillator to restore normal heart rhythm.

2. Procedure

The procedure for the insertion of epicardial electrode(s) involves several critical steps, each essential for ensuring the successful placement and functionality of the leads:

  • Step 1: Surgical Approach The procedure begins with the selection of an appropriate surgical approach, which may include thoracotomy, median sternotomy, or subxiphoid incision. The choice of approach depends on the patient's condition and the surgeon's preference.
  • Step 2: Chest Cavity Opening Once the incision is made, the chest cavity is opened to provide direct access to the heart. This step is crucial for exposing the heart muscle where the electrodes will be placed.
  • Step 3: Electrode Placement The epicardial electrodes are then positioned on the outer surface of the heart muscle. The placement is determined by the type of device being used; for a single chamber pacemaker, one electrode is placed in either the atrium or ventricle, while a dual chamber device requires one electrode in each chamber.
  • Step 4: Securing the Electrodes After positioning the electrodes, they are affixed to the heart muscle to ensure stability and proper function during the pacing or defibrillation process.
  • Step 5: Creating a Subcutaneous Tunnel A subcutaneous tunnel is then created from the heart to the pocket under the skin where the device generator will be located. This tunnel allows for the safe passage of the leads without exposing them to external elements.
  • Step 6: Connecting to the Generator The leads are guided through the subcutaneous tunnel and connected to the generator, which is typically implanted beneath the skin in the chest area or upper abdomen.
  • Step 7: Testing the Leads Once connected, the leads are tested to ensure they are functioning correctly. This step is vital to confirm that the electrodes are properly stimulating the heart as intended.
  • Step 8: Closing the Incision After successful testing, the surgical incision is closed, completing the procedure.

3. Post-Procedure

Post-procedure care following the insertion of epicardial electrode(s) involves monitoring the patient for any complications and ensuring the proper function of the leads. Patients may be observed for signs of infection at the incision site, bleeding, or any adverse reactions to anesthesia. Additionally, the functionality of the electrodes and the connected generator will be assessed to confirm that they are operating as intended. Patients are typically advised on activity restrictions and follow-up appointments to monitor their recovery and the performance of the pacing or defibrillation device. It is essential for healthcare providers to provide thorough instructions regarding wound care and signs of potential complications that should prompt immediate medical attention.

Short Descr INSERT EPICARD ELTRD OPEN
Medium Descr INSERTION EPICARDIAL ELECTRODE OPEN
Long Descr Insertion of epicardial electrode(s); open incision (eg, thoracotomy, median sternotomy, subxiphoid approach)
Status Code Active Code
Global Days 090 - Major Surgery
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) 1 - Statutory 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 Inpatient Procedures, not paid under OPPS
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P1G - Major procedure - Other
MUE 1
CCS Clinical Classification 48 - Insertion, revision, replacement, removal of cardiac pacemaker or cardioverter/defibrillator
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).
GC This service has been performed in part by a resident under the direction of a teaching physician
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
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.
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).
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).
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.
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.
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.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
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).
AG Primary physician
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
GX Notice of liability issued, voluntary under payer policy
GZ Item or service expected to be denied as not reasonable and necessary
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)
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
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
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
Date
Action
Notes
2011-01-01 Changed Short description changed.
2007-01-01 Added First appearance in code book in 2007.
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