Summary & Overview
CPT 33243: Thoracotomy with Explantation of Defibrillator Electrode
CPT code 33243 designates a thoracotomy with opening of the chest cavity to remove a single or dual-chamber implantable defibrillator electrode. This procedure is clinically important for addressing malfunctioning leads or device-related infections and carries implications for surgical risk, device management, and hospital resource use. Nationally, these explantation procedures are performed in hospital operating rooms, often under inpatient admission, and involve cardiovascular and thoracic surgical teams.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication summarizes payer coverage patterns, common billing modifiers, and clinical context relevant to device explantation and lead management.
Readers will learn the clinical definition and typical setting for CPT code 33243, how major payers approach coverage and billing for thoracotomy-based lead removal, and where this service fits within surgical device management pathways. The report also provides benchmarking information and notes any recent policy updates affecting authorization, coding specificity, and claim adjudication. Data not available in the input is indicated where applicable.
Billing Code Overview
CPT code 33243 describes a surgical procedure in which the provider performs a thoracotomy (an incision in the chest wall) and opens the chest cavity to remove a single or dual chamber implantable defibrillator electrode. Implantable defibrillators sense and regulate heart rhythm by delivering an electrical shock when clinically required; components are removed when they malfunction or when infection or other complications mandate extraction.
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Service type: Surgical explantation of implantable defibrillator lead via thoracotomy
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Typical site of service: Inpatient operating room or specialized surgical suite within a hospital setting
Clinical & Coding Specifications
Clinical Context
A 68-year-old male with ischemic cardiomyopathy and a previously implanted single-lead implantable cardioverter-defibrillator (ICD) presents with fever, erythema and purulent drainage at the device pocket site. Blood cultures are positive for Staphylococcus aureus. The electrophysiology team evaluates the patient and determines complete device removal is required due to pocket infection and bacteremia. The patient is taken to the operating room for extraction. A thoracotomy is performed to access and remove the intrathoracic portion of the single- or dual-chamber ICD lead(s) under direct visualization when transvenous extraction is not feasible or safe.
The clinical workflow includes preoperative assessment (history, focused cardiac exam, device interrogation, chest imaging), anesthesia planning (general anesthesia typical), intraoperative lead extraction via thoracotomy with appropriate hemostasis, device pocket debridement, cultures, and chest closure. Postoperative management includes ICU or monitored bed observation, intravenous antibiotics guided by infectious disease consultation, wound care, and planning for re-implantation of a new system at a contralateral site after infection clearance if indicated.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the procedure required substantially greater work than typical due to extensive adhesions, prior surgeries, or complex extraction. |