ICD-10 Code I82.499 – Acute embolism and thrombosis of other specified deep vein of unspecified lower extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.499 – Acute embolism and thrombosis of other specified deep vein of unspecified lower extremity
What it is
This code identifies an acute blood clot or embolus in a deep vein of the lower extremity when the vein is specifically described but the side is not documented. Use it for a recent deep vein thrombosis that does not fit a more specific lower-limb DVT code.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include unilateral leg swelling, pain, tenderness, warmth, or redness, with imaging used to confirm deep venous thrombosis.
When to use this code
Use I82.499 when the record states an acute embolism or thrombosis in an other specified deep vein of the lower extremity and does not identify right or left side. It is appropriate when the provider documents the condition as acute and the anatomic site is clear enough for this code. Check documentation if the vein or laterality is more specific.
Do not use for
Do not use this code for chronic or old thrombosis, superficial vein thrombosis, or DVT of a named vein that has a more specific ICD-10 code. If laterality is documented, use the more specific code instead.
Coding tip
Review the imaging report and provider note together to confirm acuity, vein location, and whether laterality is missing.