Chr emblsm and thombos unsp deep veins of dist low extrm, bi

This code signifies a long-standing obstruction of blood flow in the deep veins of both lower legs, specifically in the distal (lower) portions, due to a blood clot or foreign material. It indicates that the specific deep vein affected in the distal lower extremity is not documented.

Use this code when documentation clearly states chronic deep vein thrombosis (DVT) or embolism affecting both distal lower extremities, and the specific deep vein (e.g., posterior tibial, peroneal) is not identified. This code is appropriate when the condition is persistent or recurrent, rather than acute.

• Ensure documentation specifies "chronic" and "bilateral" involvement of the distal lower extremities.
• Avoid using this code if a more specific deep vein (e.g., posterior tibial, peroneal) is documented; instead, use the appropriate specific code.
• Do not use for acute DVT; refer to the I82.4- series for acute conditions.