ICD-10 Code I82.463 – Acute embolism and thrombosis of calf muscular vein, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.463 – Acute embolism and thrombosis of calf muscular vein, bilateral
What it is
This code identifies an acute clot or blockage in the muscular veins of both calves. Use it when documentation specifies bilateral calf muscular vein thrombosis or embolism.
Clinical signs
Findings often include calf pain, swelling, tenderness, or a sense of fullness in both legs. Clinical features vary; refer to documentation and confirm the involved veins and acuity.
When to use this code
Use I82.463 when the provider documents an acute thrombus or embolus in the muscular veins of both calves. It also fits imaging-confirmed bilateral calf muscular vein thrombosis when the record clearly states acuity.
Choose this code only when both sides are involved and the calf muscular veins are named. If the note says deep vein thrombosis without site detail, check documentation before coding.
Do not use for
Do not use this code for chronic, recurrent, or unspecified lower-extremity thrombosis. It is also not for superficial vein thrombosis or clots in veins outside the calf muscular veins.
Coding tip
Verify three elements in the note: acute status, bilateral involvement, and calf muscular vein location.