Pnctr w/o fb of unsp bk wl of thorax w penet thor cav, init

This code signifies a penetrating injury to the back of the chest wall, caused by a sharp object, where the object itself is no longer present in the wound. The injury is severe enough to have breached the pleura or other structures and entered the thoracic cavity. This code is used for the initial treatment of such an injury.

This code is appropriate for patients presenting with a fresh puncture wound to the posterior thorax that has penetrated the chest cavity, such as from a stab wound or impalement, and no foreign body is retained. It is used when the specific location on the back wall (e.g., right vs. left) is not documented.

• Ensure documentation clearly states penetration into the thoracic cavity.
• Verify the absence of a retained foreign body; if present, a different code is required.
• Confirm this is the initial encounter for treatment of the injury.