ICD-10 Code I82.563 – Chronic embolism and thrombosis of calf muscular vein, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.563 – Chronic embolism and thrombosis of calf muscular vein, bilateral
What it is
This code identifies a long-standing blood clot or embolic obstruction in the muscular veins of both calves. Use it when the documentation specifies chronic disease affecting both sides.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings may include calf pain, swelling, tenderness, or prior imaging showing persistent venous thrombosis in both legs.
When to use this code
Use I82.563 when the provider documents chronic embolism or thrombosis in the calf muscular veins on both sides. It may also apply when imaging or specialist notes confirm bilateral chronic venous clotting.
Choose this code only if the record clearly identifies the calf muscular veins and chronicity. Check documentation if the note describes an acute event, a different venous segment, or unspecified laterality.
Do not use for
Do not use this code for acute thrombosis, superficial vein disease, or clots in other leg veins. If the chart does not specify bilateral calf muscular vein involvement, check documentation.
Coding tip
Confirm both chronic status and bilateral calf muscular vein location before assigning I82.563.