Unsp injury of left innominate or subclavian vein, sequela

This code signifies a long-term complication or residual effect stemming from an unspecified injury to the left innominate (brachiocephalic) or subclavian vein. These veins are major vessels in the upper chest, and injury can lead to issues like chronic pain, venous insufficiency, or thrombosis years after the initial event.

Apply this code when a patient presents with a current condition directly attributable to a past, unspecified injury of the left innominate or subclavian vein. This is appropriate for follow-up care or when the sequela manifests significantly after the acute injury has resolved.

• Ensure documentation clearly links the current condition to a previous, unspecified injury of the specified vein.
• This code is for sequelae, meaning the acute injury itself has healed, and the patient is experiencing a late effect.
• Avoid using this code for acute injuries; instead, use the appropriate acute injury code.