ICD-10 Code I80.213 – Phlebitis and thrombophlebitis of iliac vein, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I80.213 – Phlebitis and thrombophlebitis of iliac vein, bilateral
What it is
This code identifies inflammation and clot formation in both iliac veins, the large veins in the pelvis that return blood from the legs. Use it when documentation specifically states bilateral iliac vein phlebitis or thrombophlebitis.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include pelvic or lower-extremity pain, swelling, tenderness, and evidence of venous thrombosis on imaging or exam.
When to use this code
Use I80.213 when the provider documents bilateral iliac vein thrombophlebitis or phlebitis, including acute or chronic cases if no more specific code is given. You should also use it when imaging or specialist notes clearly localize the clot to both iliac veins.
If the record says deep vein thrombosis without site, check documentation before assigning this code. Confirm laterality and vessel location, because iliac vein involvement is more specific than general lower-extremity DVT coding.
Do not use for
Do not use this code for unilateral iliac vein disease, unspecified vein thrombosis, or superficial phlebitis. Check documentation if the site is described only as pelvic, femoral, or lower-extremity vein involvement.
Coding tip
Always verify both laterality and the exact vein named in the note before coding I80.213.