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Official Description

Removal of implantable defibrillator pulse generator with replacement of implantable defibrillator pulse generator; dual lead system

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 33263 involves the removal and replacement of an implantable defibrillator pulse generator, specifically within a dual lead system. An implantable defibrillator, also known as an automatic implantable cardioverter-defibrillator (AICD or ICD), is a medical device designed to monitor the heart's electrical activity continuously. It plays a critical role in managing life-threatening arrhythmias by providing various therapeutic interventions. These include anti-tachycardia pacing, which helps prevent rapid irregular heart rhythms; backup pacing to maintain a stable heart rhythm; cardioversion, which delivers a mild shock to restore a normal rhythm; and defibrillation, which administers a stronger shock to correct dangerously abnormal rhythms or to revive the heart during cardiac arrest. During this procedure, the physician first opens the skin pocket where the existing pulse generator is located and carefully removes it. The new pulse generator is then connected to the existing leads, which are the wires that deliver electrical impulses to the heart. After ensuring that the new generator and leads are functioning correctly through testing, the new pulse generator is placed back into the pocket, secured to the underlying tissue, and the pocket is subsequently closed. This procedure is essential for patients whose existing defibrillator is malfunctioning or whose generator battery is nearing the end of its operational life. For coding purposes, it is important to note that CPT® Code 33262 is used for a single lead system, while CPT® Code 33263 is designated for a dual lead system, and CPT® Code 33264 is applicable for a multiple lead system.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure associated with CPT® Code 33263 is indicated for patients who require the replacement of an implantable defibrillator pulse generator due to specific clinical circumstances. These indications may include:

  • Malfunction of the existing device - The current implantable defibrillator may not be functioning correctly, necessitating replacement to ensure continued monitoring and treatment of heart rhythm abnormalities.
  • Battery depletion - The battery of the existing pulse generator may be nearing the end of its life, which requires replacement to maintain the device's operational capabilities.

2. Procedure

The procedure for CPT® Code 33263 involves several critical steps to ensure the safe and effective replacement of the implantable defibrillator pulse generator. These steps include:

  • Step 1: Preparation - The patient is positioned appropriately, and the area where the pulse generator is located is cleaned and sterilized to minimize the risk of infection. Anesthesia may be administered to ensure the patient is comfortable throughout the procedure.
  • Step 2: Incision and Access - A surgical incision is made over the skin pocket where the existing pulse generator is implanted. This allows the physician to access the device directly.
  • Step 3: Removal of the Existing Generator - The physician carefully removes the existing implantable defibrillator pulse generator from the pocket. This step may involve detaching the leads connected to the generator.
  • Step 4: Testing the Leads - Before inserting the new pulse generator, the physician tests the existing leads to ensure they are functioning properly and can effectively connect to the new device.
  • Step 5: Insertion of the New Generator - The new implantable defibrillator pulse generator is then attached to the existing leads. The physician conducts tests to confirm that the new generator is operational and communicating effectively with the leads.
  • Step 6: Closure - Once the new pulse generator is confirmed to be working correctly, it is placed back into the skin pocket. The generator is sutured to the underlying tissue to secure it in place, and the skin pocket is closed with sutures.

3. Post-Procedure

After the procedure, patients are typically monitored for any immediate complications, such as infection or issues with the new device. Instructions for post-procedure care may include keeping the incision site clean and dry, monitoring for signs of infection, and following up with the healthcare provider for device checks and adjustments. Patients may also receive guidance on activity restrictions to ensure proper healing and device function. Regular follow-up appointments are essential to assess the performance of the new implantable defibrillator and to make any necessary adjustments to the device settings.

Short Descr RMVL & RPLCMT DFB GEN 2 LEAD
Medium Descr RMVL IMPLTBL DFB PLSE GEN W/RPLCMT PLSE GEN 2 LD
Long Descr Removal of implantable defibrillator pulse generator with replacement of implantable defibrillator pulse generator; dual lead system
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 Hospital Part B services paid through a comprehensive APC
ASC Payment Indicator Device-intensive procedure added to ASC list in CY 2008 or later; paid at adjusted rate.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P2F - Major procedure, cardiovascular-Other
MUE 1
CCS Clinical Classification 48 - Insertion, revision, replacement, removal of cardiac pacemaker or cardioverter/defibrillator

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

33225 Addon Code MPFS Status: Active Code APC N ASC N1 Physician Quality Reporting PUB 100 CPT Assistant Article Insertion of pacing electrode, cardiac venous system, for left ventricular pacing, at time of insertion of implantable defibrillator or pacemaker pulse generator (eg, for upgrade to dual chamber system) (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
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).
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.)
AG Primary physician
AO Alternate payment method declined by provider of service
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
CR Catastrophe/disaster related
GA Waiver of liability statement issued as required by payer policy, individual case
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
GZ Item or service expected to be denied as not reasonable and necessary
KX Requirements specified in the medical policy have been met
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
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
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
SC Medically necessary service or supply
SG Ambulatory surgical center (asc) facility service
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
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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2017-01-01 Changed Moderate (Conscious) Sedation flag removed. See new Moderate Sedation category.
2015-01-01 Changed Description Changed
2013-01-01 Changed Medium Descriptor changed.
2012-01-01 Added Added
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