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

This code signifies a penetrating injury to the left side of the back of the chest, caused by a sharp object, but without any foreign material remaining in the wound. Importantly, the injury does not extend deep enough to enter the thoracic cavity, meaning the lungs and other internal organs are not directly affected.

Use this code for patients presenting with a fresh puncture wound to the left posterior thorax that has been thoroughly examined and confirmed to be superficial. This applies when imaging or exploration rules out foreign bodies and penetration into the chest cavity. It is appropriate for the initial treatment of such an injury.

• Ensure documentation explicitly states "left back wall of thorax" and "without penetration into thoracic cavity."
• Verify the absence of a foreign body; if present, a different code is required.
• Confirm this is the initial encounter for this specific injury; subsequent care will use a different seventh character.