ICD-10 Code I82.811 – Embolism and thrombosis of superficial veins of right lower extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.811 – Embolism and thrombosis of superficial veins of right lower extremity
What it is
This code identifies a clot or blockage in the superficial veins of the right lower leg or thigh. It is used when the problem involves the superficial venous system on the right side, not the deep veins.
Clinical signs
Typical findings include localized pain, tenderness, swelling, warmth, and a palpable cord along a superficial vein. Clinical features vary; refer to documentation.
When to use this code
Use I82.811 when the provider documents embolism or thrombosis affecting superficial veins in the right lower extremity. It is appropriate for confirmed superficial venous clotting on the right side, including charted superficial thrombophlebitis when documented as thrombosis.
Do not assume laterality from imaging alone if the note does not specify the right leg. If the record only says “superficial vein thrombosis” without location, check documentation before coding.
Do not use for
Do not use this code for deep vein thrombosis, upper-extremity thrombosis, or unspecified laterality. Check documentation if the record describes varicose veins, phlebitis, or another nonthrombotic venous disorder.
Coding tip
Verify both the venous system and laterality in the provider note before assigning I82.811.