ICD-10 Code I82.429 – Acute embolism and thrombosis of unspecified iliac vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.429 – Acute embolism and thrombosis of unspecified iliac vein
What it is
I82.429 identifies an acute blood clot or embolus in an iliac vein when the side is not specified. It is used for a sudden venous occlusion in the pelvic outflow pathway.
Clinical signs
Typical findings include unilateral leg swelling, pain, warmth, or tenderness, but clinical features vary; refer to documentation. Imaging confirmation of an acute iliac venous clot is usually needed.
When to use this code
Use this code when the provider documents acute embolism or thrombosis involving an unspecified iliac vein and does not identify right or left. It fits confirmed acute venous thrombosis in the iliac segment. If the record states a different venous site or a chronic condition, choose the documented diagnosis instead.
Do not use for
Do not use this code for chronic, recurrent, or old thrombosis, or when the clot is in a different vein. Check documentation if the side is specified or if the event is not acute.
Coding tip
Verify that “acute” and “iliac vein” are both documented before assigning I82.429.