ICD-10 Code I82.51 – Chronic embolism and thrombosis of femoral vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.51 – Chronic embolism and thrombosis of femoral vein
What it is
This code identifies a long-standing blood clot or embolic obstruction in the femoral vein. It applies when the condition is chronic rather than acute and involves the thigh vein.
Clinical signs
Findings may include persistent leg swelling, pain, heaviness, or venous insufficiency changes. Clinical features vary; refer to documentation and imaging or vascular assessment when available.
When to use this code
Use I82.51 when the provider documents chronic embolism, thrombosis, or both in the femoral vein. It is appropriate for established disease, follow-up care, or a history of persistent venous obstruction in that vessel.
Code only when the record clearly supports chronic femoral vein involvement. Check documentation if the note describes an acute clot, a different vein, or an unspecified deep vein thrombosis.
Do not use for
Do not use this code for acute femoral vein thrombosis or embolism. Also avoid it when the documentation names another venous site or does not confirm chronicity.
Coding tip
Verify both chronic status and femoral vein location before assigning I82.51.