ICD-10 Code I82.431 – Acute embolism and thrombosis of right popliteal vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.431 – Acute embolism and thrombosis of right popliteal vein
What it is
This code identifies an acute blood clot or embolus in the right popliteal vein, the deep vein behind the knee. It indicates a new or active venous thrombosis in the right leg.
Clinical signs
Clinical features vary; refer to documentation. Common findings include unilateral leg pain, swelling, tenderness, warmth, or a palpable cord, with imaging confirming thrombosis in the right popliteal vein.
When to use this code
Use I82.431 when the provider documents acute embolism or thrombosis specifically in the right popliteal vein. Code it when the diagnosis is confirmed and the record supports laterality and acuity. Check documentation if the clot is described as chronic, unspecified, or in a different vein.
Do not use for
Do not use this code for chronic, old, or resolved thrombosis, or for clots in other veins. If the documentation does not clearly identify the right popliteal vein, check documentation.
Coding tip
Verify both acuity and laterality in the note before assigning I82.431.