ICD-10 Code I80.211 – Phlebitis and thrombophlebitis of right iliac vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I80.211 – Phlebitis and thrombophlebitis of right iliac vein
What it is
I80.211 identifies inflammation of the right iliac vein with associated thrombosis. Use it when documentation specifies phlebitis or thrombophlebitis in that right-sided pelvic vein.
Clinical signs
Clinical features vary; refer to documentation. Commonly noted findings include venous pain, swelling, tenderness, or imaging evidence of thrombus in the right iliac vein.
When to use this code
Use this code when the provider documents phlebitis, thrombophlebitis, or venous thrombosis specifically in the right iliac vein. It may also apply when imaging or a specialist note clearly localizes the clot to that vein. If laterality or vein site is unclear, check documentation.
Do not use for
Do not use it for thrombosis in another vein, bilateral disease, or unspecified iliac vein involvement. Avoid this code when the record only states deep vein thrombosis without right iliac vein localization.
Coding tip
Confirm both the vein location and laterality in the record before assigning I80.211.