ICD-10 Code I82.412 – Acute embolism and thrombosis of left femoral vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.412 – Acute embolism and thrombosis of left femoral vein
What it is
This code identifies an acute blood clot or embolus blocking the left femoral vein in the thigh. It describes a new or recent venous thrombosis on the left side.
Clinical signs
Typical findings include unilateral leg swelling, pain, tenderness, warmth, or discoloration. Clinical features vary; refer to documentation, and confirm the affected vein and side when recorded.
When to use this code
Use I82.412 when the record clearly states acute embolism or thrombosis involving the left femoral vein. It is appropriate for documented deep vein thrombosis localized to that vein, whether diagnosed in the emergency setting or during inpatient care.
Verify that the condition is acute and specifically left femoral, not another leg vein or a chronic clot. If the note only says DVT without site or laterality, check documentation.
Do not use for
Do not use this code for chronic or old thrombosis, or for clots in a different vessel. Do not assign it when the documentation does not specify the left femoral vein.
Coding tip
Match the note’s exact vein, laterality, and acuity before coding, and query the provider if any of those elements are missing.