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Official Description

Removal of single or dual chamber implantable defibrillator electrode(s); by thoracotomy

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 33243 involves the surgical removal of one or more single or dual chamber implantable defibrillator electrodes through a thoracotomy. This approach is typically necessary when the electrodes, which are critical components of an implantable defibrillator system, are either malfunctioning or damaged, or when there is an infection at the site of the generator or leads. Additionally, the removal may be required if the leads are causing interference with blood flow. The thoracotomy allows for direct access to the heart, particularly when the leads are deeply embedded in the myocardium or when dense scar tissue and adhesions prevent a transvenous extraction. The procedure entails making an incision in the chest to expose the heart, disconnecting the lead from the generator, and carefully dissecting the leads from the surrounding tissue to ensure complete removal. This surgical intervention is critical for patient safety and is performed under specific clinical circumstances that necessitate such an invasive approach.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 33243 is indicated for the following conditions:

  • Malfunctioning Electrode(s) Removal is necessary when the implantable defibrillator electrodes are not functioning correctly, which may compromise the device's ability to deliver appropriate therapy.
  • Damage to Electrode(s) If the electrode wires are damaged, they may need to be surgically removed to prevent further complications or ineffective treatment.
  • Infection An infection at the site of the generator or leads can necessitate removal to prevent systemic infection or further complications.
  • Interference with Blood Flow The presence of leads that interfere with normal blood flow may require surgical intervention to restore proper hemodynamics.
  • Dense Scar Tissue When leads are embedded in dense scar tissue or adhesions, a thoracotomy may be required to safely extract the electrodes.

2. Procedure

The procedure for the removal of implantable defibrillator electrodes by thoracotomy involves several critical steps:

  • Incision and Exposure An incision is made in the chest over the pacemaker generator to access the leads. The lead is then disconnected from the generator. A median sternotomy is performed to expose the heart, allowing the surgeon to visualize and access the electrodes directly.
  • Cardiopulmonary Bypass (if required) If the procedure necessitates cardiopulmonary bypass, the aorta is cannulated, followed by cannulation of the superior and inferior vena cava to facilitate the removal process while maintaining circulation.
  • Dissection of Epicardial Leads For epicardial leads, the surgeon carefully dissects the lead free from the epicardium and removes it. This step requires precision to avoid damaging surrounding tissues.
  • Incision for Endocardial Leads If the lead to be removed is an endocardial atrial electrode, an incision is made in the right atrium. The electrode is then dissected free from any adhesive scar tissue that may have formed around it.
  • Accessing the Right Ventricle For endocardial electrodes located in the right ventricle, the surgeon may approach the lead through the right atrium or make a direct incision in the right ventricle. If the right atrial approach is used, the right ventricle is inverted to facilitate access to the electrode.
  • Closure of Incisions After the electrodes are successfully removed, the heart wall incisions are closed, and chest tubes may be placed as needed to manage any fluid accumulation. Finally, the chest is closed to complete the procedure.

3. Post-Procedure

Post-procedure care following the removal of implantable defibrillator electrodes via thoracotomy includes monitoring for any signs of complications such as bleeding, infection, or arrhythmias. Patients may require pain management and will be observed in a recovery setting until stable. The placement of chest tubes may necessitate additional monitoring for fluid drainage. Follow-up appointments will be essential to assess the surgical site and ensure proper healing, as well as to evaluate the need for further interventions or adjustments to the patient's cardiac management plan.

Short Descr REMOVE ELTRD/THORACOTOMY
Medium Descr RMVL 1/DUAL CHAMBER DEFIB ELECTRODE BY THORACOM
Long Descr Removal of single or dual chamber implantable defibrillator electrode(s); by thoracotomy
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) 2 - Payment restriction for assistants at surgery does not apply to this procedure...
Co-Surgeons (62) 1 - Co-surgeons could be paid, though supporting documentation is required...
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) P2E - Major procedure, cardiovascular-Pacemaker insertion
MUE 1
CCS Clinical Classification 48 - Insertion, revision, replacement, removal of cardiac pacemaker or cardioverter/defibrillator
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.
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).
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.
62 Two surgeons: when 2 surgeons work together as primary surgeons performing distinct part(s) of a procedure, each surgeon should report his/her distinct operative work by adding modifier 62 to the procedure code and any associated add-on code(s) for that procedure as long as both surgeons continue to work together as primary surgeons. each surgeon should report the co-surgery once using the same procedure code. if additional procedure(s) (including add-on procedure(s) are performed during the same surgical session, separate code(s) may also be reported with modifier 62 added. note: if a co-surgeon acts as an assistant in the performance of additional procedure(s), other than those reported with the modifier 62, during the same surgical session, those services may be reported using separate procedure code(s) with modifier 80 or modifier 82 added, as appropriate.
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).
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
GC This service has been performed in part by a resident under the direction of a teaching physician
GZ Item or service expected to be denied as not reasonable and necessary
KX Requirements specified in the medical policy have been met
RT Right side (used to identify procedures performed on the right side of the body)
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2015-01-01 Changed Description Changed
1994-01-01 Added First appearance in code book in 1994.
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