ICD-10 Code I82.4Y3 – Acute embolism and thrombosis of unspecified deep veins of proximal lower extremity, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.4Y3 – Acute embolism and thrombosis of unspecified deep veins of proximal lower extremity, bilateral
What it is
This code identifies an acute blood clot, or clot plus embolus, in the deep veins of both proximal lower extremities when the exact vein is not specified. It applies to the lower-leg region closest to the trunk, such as the thigh area.
Clinical signs
Clinical features vary; refer to documentation. Typical findings in deep vein thrombosis include leg pain, swelling, tenderness, warmth, or asymmetry, but the record must support bilateral proximal deep venous involvement.
When to use this code
Use this code when the provider documents an acute thrombosis or embolism in unspecified deep veins of the proximal lower extremities on both sides. It is appropriate when laterality is bilateral and the vein location is proximal, but not named more specifically. If the note only says DVT without acute status, location, or bilaterality, check documentation.
Do not use for
Do not use this code for chronic, recurrent, or distal lower-extremity thrombosis, or when the clot is in a specified vein with a more precise code available. Check documentation if the record does not clearly confirm bilateral proximal disease.
Coding tip
Verify three elements in the note: acute, bilateral, and proximal deep vein involvement before assigning I82.4Y3.