32551

Tube Thoracostomy, Open (Chest Tube Insertion)

Tube thoracostomy, commonly known as the insertion of a chest tube, is a surgical procedure performed to evacuate abnormal accumulations of air, blood, pus, or fluid from the pleural space, which is the potential space between the parietal and visceral pleura of the lungs. The procedure is vital for restoring negative intrapleural pressure, allowing the lung to re-expand and improving respiratory mechanics and gas exchange. In an open tube thoracostomy (32551), the physician typically identifies the 'safe triangle'—an area bordered by the anterior border of the latissimus dorsi, the lateral border of the pectoralis major, and the fifth intercostal space. After sterile preparation and administration of local anesthesia to the skin and deep tissues (including the rib periosteum), a transverse skin incision is made. Using blunt dissection with a hemostat or Kelly clamp, the provider creates a tract through the subcutaneous tissue and intercostal muscles, passing over the superior aspect of the rib to avoid the neurovascular bundle. Once the parietal pleura is breached, a finger is often inserted to confirm the location and check for adhesions. A chest tube (large-bore or medium-bore) is then guided into the pleural space, directed posteriorly and superiorly for air (pneumothorax) or inferiorly for fluid (effusion/hemothorax). The tube is then secured to the chest wall with sutures, an occlusive dressing is applied, and the distal end is connected to a one-way drainage system, such as a water-seal or suction device. The 32551 code specifically describes the open technique, involving manual dissection rather than a simple percutaneous needle or trocar technique.

Clinical Indications

  • Pneumothorax (tension, spontaneous, or traumatic)
  • Hemothorax (accumulation of blood)
  • Pleural effusion (malignant, parapneumonic, or chylothorax)
  • Empyema (accumulation of pus)
  • Post-operative drainage after thoracic or cardiac surgery
  • Hemopneumothorax
  • Bilateral lung collapse

Procedure Steps

  1. Patient positioning, typically supine with the arm of the affected side abducted and placed behind the head.
  2. Identification of the insertion site, usually the 4th or 5th intercostal space at the mid-axillary or anterior-axillary line.
  3. Skin preparation with antiseptic solution and creation of a sterile field.
  4. Infiltration of local anesthetic (e.g., 1% lidocaine) into the skin, subcutaneous tissue, and parietal pleura.
  5. Making a 2-3 cm horizontal skin incision parallel to the rib.
  6. Blunt dissection through the intercostal muscles using a large clamp over the superior margin of the rib.
  7. Puncture of the parietal pleura and confirmation of entry via a 'pop' or gush of fluid/air.
  8. Digital exploration of the pleural space to verify position and identify adhesions.
  9. Insertion of the chest tube into the pleural space using the clamp or finger as a guide.
  10. Securing the tube to the skin using a strong non-absorbable suture (e.g., silk or prolene).
  11. Connection of the tube to a sterile water-seal drainage system.
  12. Application of an occlusive petroleum-based gauze dressing and tape.
  13. Verification of tube placement and lung expansion via chest X-ray.

Coding Guidelines

  • CPT 32551 is designated as a 'separate procedure.' It should not be reported when it is an integral component of a more major procedure performed at the same site, such as a thoracotomy.
  • If imaging guidance (ultrasound or CT) is used to perform the tube thoracostomy, refer to codes 32556 or 32557 for percutaneous catheter drainage with imaging.
  • Do not report 32551 in conjunction with 32550 (insertion of indwelling tunneled catheter).
  • Connection to a water seal or drainage system is included in the procedure and not billed separately.
  • If performed bilaterally, append modifier 50.
  • Local anesthesia is included in the surgical package and not separately reportable.
  • For removal of the chest tube, this is typically included in the post-operative E&M care and is not coded as a separate procedure.

Associated ICD-10 Codes