ICD-10 Code I82.42 – Acute embolism and thrombosis of iliac vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.42 – Acute embolism and thrombosis of iliac vein
What it is
I82.42 identifies an acute blood clot or embolus in an iliac vein, the large vein in the pelvis. Use it when documentation specifies the iliac vein and the event is acute.
Clinical signs
Common findings include unilateral leg swelling, pain, tenderness, and sometimes discoloration or warmth. Clinical features vary; refer to documentation and confirm the clot is in the iliac vein.
When to use this code
Use I82.42 when the provider documents acute embolism or thrombosis in the iliac vein, including left, right, or unspecified side if stated elsewhere in the record. It is appropriate for imaging-confirmed or clinically documented acute iliac vein thrombosis. Check documentation if the record only mentions DVT without a specified venous site.
Do not use for
Do not use this code for chronic or old thrombosis, or for clots limited to other venous sites such as femoral or popliteal veins. If the documentation is nonspecific, check documentation.
Coding tip
Code the acute iliac vein site exactly as documented, and verify laterality or acuity elsewhere in the chart before assigning I82.42.