ICD-10 Code I82.812 – Embolism and thrombosis of superficial veins of left lower extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.812 – Embolism and thrombosis of superficial veins of left lower extremity
What it is
This code identifies a blood clot or blockage in a superficial vein of the left lower leg or thigh. It applies when the provider documents superficial venous thrombosis or embolism on the left side.
Clinical signs
Common findings include localized pain, tenderness, warmth, redness, and a palpable cord along a superficial vein. Clinical features vary; refer to documentation, especially if the note distinguishes superficial from deep venous disease.
When to use this code
Use I82.812 when the record clearly states embolism or thrombosis involving superficial veins of the left lower extremity. It is appropriate for documented superficial thrombophlebitis or similar wording when the left side is specified.
Code this when the provider confirms the anatomic site and laterality. Check documentation if the note only says “leg clot,” because that may refer to a different venous location.
Do not use for
Do not use this code for deep vein thrombosis, unspecified lower-extremity thrombosis, or superficial vein disease without thrombosis. Check documentation if laterality is missing or if the clot is in another vessel.
Coding tip
Confirm both “superficial” and “left lower extremity” in the provider’s wording before assigning I82.812.