ICD-10 Code I82.46 – Acute embolism and thrombosis of calf muscular vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.46 – Acute embolism and thrombosis of calf muscular vein
What it is
I82.46 identifies an acute blood clot or embolus in a calf muscular vein, usually the gastrocnemius or soleal veins. Use it for a new, active venous thrombosis in the muscular veins of the lower leg.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include calf pain, swelling, tenderness, or localized warmth, with imaging used to confirm venous thrombosis in the muscular calf veins.
When to use this code
Use this code when the provider documents an acute embolism or thrombosis limited to the calf muscular veins. It applies when the clot is in the muscular veins rather than the deep veins of the thigh or popliteal system. Check documentation if the record only says “DVT of the leg” without a more specific location.
Do not use for
Do not use this code for chronic, old, or resolved thrombosis. Do not assign it for thrombosis in other venous sites, or when the documentation only supports superficial vein disease. Check documentation.
Coding tip
Code the most specific vein location documented; if the calf muscular vein is not stated, do not assume I82.46.