Pnctr w/o fb of r bk wl of thorax w penet thor cavity, init

This code signifies a penetrating injury to the right posterior chest wall, caused by a sharp object, that has breached the thoracic cavity but does not involve a retained foreign body. This type of injury carries a risk of damage to underlying intrathoracic organs such as the lung, heart, or great vessels.

Apply this code for patients presenting with a stab wound or similar puncture injury to the right back, where diagnostic imaging (e.g., CT scan) or surgical exploration confirms penetration into the pleural space or mediastinum. This is appropriate for the initial treatment of such an injury.

• Ensure documentation explicitly states "right back wall of thorax" and "penetration into thoracic cavity."
• Verify the absence of a retained foreign body; if present, a different subcategory would be used.
• Confirm this is the initial encounter for treatment of this specific injury.