Chronic embolism and thrombosis of tibial vein, bilateral

This code signifies the presence of a persistent blood clot (thrombosis) or a traveling clot (embolism) affecting the tibial veins in both lower extremities. This is a long-standing condition, distinguishing it from acute events.

Use this code when documentation clearly indicates a chronic, bilateral embolism or thrombosis specifically within the tibial veins. Supporting documentation would include imaging reports (e.g., ultrasound, venography) confirming chronic findings and a physician's diagnosis of chronic involvement of both tibial veins.

• Ensure the documentation specifies "chronic" and "bilateral" involvement of the tibial veins.
• Distinguish from acute events, which are coded differently (e.g., I82.44-).
• Do not use if the thrombosis or embolism is in a different lower extremity vein (e.g., femoral, popliteal).