Unsp injury of unsp tibial artery, unspecified leg, sequela

This code signifies a long-term complication or late effect stemming from an unspecified injury to an unspecified tibial artery in an unspecified leg. It indicates that the acute phase of the injury has passed, and the patient is now experiencing residual issues directly attributable to that prior arterial damage.

Apply this code when documentation clearly indicates a sequela (e.g., chronic pain, claudication, non-healing ulcer, or functional impairment) resulting from a past, ill-defined injury to any tibial artery. This is appropriate when the specific artery (anterior, posterior, or peroneal) and the exact nature of the original injury are not documented.

• Ensure the "S" seventh character is used only for sequelae, indicating a late effect of a previous injury.
• Avoid this code if the specific tibial artery or the nature of the injury is known; instead, use a more precise code.
• Always sequence this code after the code(s) for the specific sequela being treated (e.g., chronic pain, non-healing wound).