CPT® Code 32604

Diagnostic thoracoscopy, as described by CPT® Code 32604, is a minimally invasive surgical procedure that allows for direct visualization of the pericardial sac, which is the double-walled sac containing the heart. This procedure is performed to obtain tissue samples through biopsy, aiding in the diagnosis of various cardiac conditions. During the procedure, a thoracoscope—a thin, flexible tube equipped with a camera and light—is inserted through a small incision made at either the right or left midaxillary line, typically at the sixth or seventh intercostal space. This access point enables the physician to examine the pericardial sac closely for any abnormalities, such as lesions or signs of disease. If necessary, additional small incisions may be created to facilitate the introduction of surgical instruments for further examination or intervention. The procedure may involve aspirating fluid from the pericardial sac for laboratory analysis, which is crucial for diagnosing conditions like pericardial effusion, pericarditis, or pericardial constriction. Throughout the thoracoscopy, the cardiac chambers, epicardium, and pericardium are meticulously inspected, and photographs may be taken to document findings. This comprehensive approach ensures that any pathological changes can be identified and addressed appropriately.