ICD-10 Code I82.551 – Chronic embolism and thrombosis of right peroneal vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.551 – Chronic embolism and thrombosis of right peroneal vein
What it is
This code identifies a long-standing clot or embolic blockage in the right peroneal vein, a deep vein in the lower leg. It indicates a chronic venous obstruction on the right side.
Clinical signs
Clinical features vary; refer to documentation. Common documentation may include a history of prior deep vein thrombosis, persistent leg swelling, pain, heaviness, or venous changes in the affected right lower leg.
When to use this code
Use this code when the provider documents chronic embolism or thrombosis involving the right peroneal vein. It is appropriate for confirmed chronic deep venous disease, including follow-up encounters where the condition remains active or is still being monitored.
Do not assign it for a suspected clot without confirmation. Check documentation if the record only states prior DVT, venous insufficiency, or nonspecific leg symptoms without naming the right peroneal vein.
Do not use for
Do not use this code for acute thrombosis, superficial thrombophlebitis, or clots in a different vein location. Also avoid it when the chart does not specify chronicity or the right-sided peroneal vein.
Coding tip
Confirm both chronic status and right peroneal vein location in the provider note before assigning I82.551.