ICD-10 Code I80.241 – Phlebitis and thrombophlebitis of right peroneal vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I80.241 – Phlebitis and thrombophlebitis of right peroneal vein
What it is
This code identifies inflammation and clot formation in the right peroneal vein, a deep vein in the lower leg. Use it when documentation specifically states the right peroneal vein is affected.
Clinical signs
Typical findings may include leg pain, tenderness, swelling, warmth, or redness along the affected calf. Clinical features vary; refer to documentation for confirmed deep vein involvement.
When to use this code
Use I80.241 when the record clearly documents phlebitis or thrombophlebitis of the right peroneal vein. It applies to a diagnosed deep venous process in that exact vein, not a nonspecific leg clot. If laterality or vein location is unclear, check documentation.
Do not use for
Do not use this code for superficial thrombophlebitis, unspecified lower-extremity vein thrombosis, or left-sided disease. If the note does not identify the right peroneal vein, choose the more accurate documented code.
Coding tip
Verify both laterality and vein name in the assessment, imaging report, or discharge diagnosis before assigning I80.241.