Lac w fb of l bk wl of thorax w/o penet thor cavity, sequela

This code signifies a past injury to the left posterior chest wall involving a deep cut that included a foreign object, such as glass or metal. Importantly, this laceration did not extend into the chest cavity itself. The "sequela" designation indicates that this code is used to report a current condition or complication arising directly from that original injury.

Use this code when documenting a long-term effect or consequence of a previous laceration to the left back of the thorax that contained a foreign body, but did not penetrate the thoracic cavity. This would apply to conditions like chronic pain, scarring, nerve damage, or persistent foreign body sensation directly attributable to the original injury. It is not for reporting the initial acute injury.

• Always use a sequela code (S21.222S) as a secondary diagnosis, following the code for the specific sequela being treated.
• Ensure documentation clearly links the current condition to the previous laceration with a foreign body.
• Verify the laterality (left) and anatomical site (back wall of thorax) are accurately reflected in the medical record.