ICD-10 Code I82.49 – Acute Embolism and Thrombosis of Other Specified Deep Vein of Lower Extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.49 – Acute embolism and thrombosis of other specified deep vein of lower extremity
What it is
This code identifies an acute blood clot blocking a deep vein in the lower leg or thigh when the vein is specified but not covered by a more exact code. Use it for a recent deep vein thrombosis involving an other specified lower-extremity deep vein.
Clinical signs
Clinical features vary; refer to documentation. Common findings in deep vein thrombosis include unilateral leg swelling, pain, tenderness, warmth, or redness, with diagnosis supported by imaging or other documented clinical confirmation.
When to use this code
Use this code when the record clearly states acute embolism or thrombosis in a specified deep vein of the lower extremity and no more specific ICD-10-CM code applies. It fits documented acute DVT in an unnamed or other specified deep vein. If the provider documents a different site or chronic clot, check documentation.
Do not use for
Do not use this code for chronic or old thrombosis, superficial vein thrombosis, or embolism in a different vascular site. If the vein is more specifically identified elsewhere in ICD-10-CM, choose that code instead.
Coding tip
Code only when the documentation confirms both acuity and the lower-extremity deep vein location.