ICD-10 Code I82.4 – Acute embolism and thrombosis of deep veins of lower extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.4 – Acute embolism and thrombosis of deep veins of lower extremity
What it is
I82.4 identifies an acute clot or embolus in the deep veins of the lower extremity. Use it when the record documents a new deep vein thrombosis affecting the leg veins.
Clinical signs
Typical findings include unilateral leg swelling, pain, warmth, and tenderness. Clinical features vary; refer to documentation, and confirm that the diagnosis is acute and involves deep veins of the lower extremity.
When to use this code
Use I82.4 when the provider documents acute DVT or acute venous thrombosis in a lower-extremity deep vein. It also fits when imaging or specialist documentation clearly supports the diagnosis. Check documentation if laterality or vessel detail is needed for a more specific code.
Do not use for
Do not use this code for superficial thrombophlebitis, chronic venous thrombosis, or pulmonary embolism without lower-extremity DVT documentation. Check documentation when the site, acuity, or type of thrombosis is unclear.
Coding tip
Code the highest level of specificity available, and verify whether the record identifies left, right, or bilateral involvement.