Lac w fb of l bk wl of thorax w penet thoracic cavity, init

This code signifies a deep cut on the left side of the back, specifically involving the thoracic wall, where an external object has become embedded. Crucially, the injury extends through the chest wall and into the thoracic cavity, potentially affecting internal organs. This indicates a significant and potentially life-threatening injury.

Apply this code when documenting an initial presentation for a patient who has sustained a penetrating injury to the left posterior chest, such as from a stab wound or impalement, where a foreign body is retained and has breached the pleural space. This is appropriate for the initial emergency department visit or first encounter for treatment.

• Confirm documentation explicitly states "left back wall of thorax" and "penetration into thoracic cavity."
• Ensure the foreign body is still present and documented.
• Verify this is the patient's initial encounter for this specific injury.