Major laceration of left innominate or subclavian vein, subs

This code signifies a significant tear or cut in the left innominate (brachiocephalic) or subclavian vein, which are major blood vessels in the upper chest and neck. This injury is severe and typically results in substantial bleeding, potentially leading to hemodynamic instability.

Apply this code when documenting the diagnosis of a major laceration to the left innominate or subclavian vein during a subsequent encounter. This includes follow-up visits for ongoing treatment, monitoring, or management of complications arising from the initial injury.

• Ensure documentation clearly specifies "major laceration" and the "left" side of the innominate or subclavian vein.
• Verify the encounter is indeed "subsequent" and not the initial treatment for the injury.
• Look for associated external cause codes to fully describe the circumstances of the injury.