Major laceration of left innominate or subclav art, subs

This code signifies a significant tear or cut in the left innominate (brachiocephalic) or subclavian artery, which are major blood vessels supplying the head, neck, and upper limb. This specific code indicates that the patient is receiving follow-up care for this previously diagnosed injury, such as wound checks, medication management, or rehabilitation.

Use this code for encounters where a patient is being seen for ongoing management of a major laceration to their left innominate or subclavian artery after the initial treatment phase. This includes visits for monitoring healing, addressing complications, or managing related conditions during the recovery period. It would not be used for the initial acute injury or for sequelae once the acute injury has fully healed.

• Ensure the encounter is for follow-up care, not the initial treatment or a late effect.
• Verify laterality (left) and the specific vessel (innominate or subclavian artery).
• Always assign an external cause code to describe the circumstances of the injury.