Chronic embolism and thrombosis of left peroneal vein

This code signifies the persistent presence of a blood clot within the left peroneal vein, a deep vein in the lower leg, that has developed over an extended period. This condition can impede venous blood flow, potentially leading to chronic venous insufficiency or other complications.

Use this code when documentation explicitly states a chronic embolism or thrombosis affecting the left peroneal vein. This diagnosis is typically supported by imaging studies such as duplex ultrasound, venography, or CT venography, confirming the presence and chronicity of the clot in the specified vessel.

• Ensure the documentation specifies "chronic" and clearly identifies the "left peroneal vein" to differentiate from acute or other venous locations.
• Do not confuse with acute thrombosis (I82.4- series) or thrombosis of other deep veins in the lower extremity.
• Always review for any associated conditions, such as post-thrombotic syndrome (I87.0-) or pulmonary embolism, which may require additional coding.