ICD-10 Code I82.44 – Acute embolism and thrombosis of tibial vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.44 – Acute embolism and thrombosis of tibial vein
What it is
I82.44 identifies an acute blood clot or embolus in a tibial vein of the lower leg. Use it when the documentation specifically states acute embolism or thrombosis in this vein.
Clinical signs
Clinical features may include unilateral leg pain, swelling, warmth, or tenderness. Diagnosis is usually supported by imaging or other documentation confirming a tibial vein clot; clinical features vary, refer to documentation.
When to use this code
Use this code when the provider documents an acute embolism or thrombosis involving the tibial vein, including anterior or posterior tibial vein if stated in the record. It fits confirmed lower-leg venous thrombosis, not chronic or unspecified venous disease. If laterality or acuity is unclear, check documentation before assigning the code.
Do not use for
Do not use I82.44 for chronic thrombosis, superficial thrombophlebitis, or clots in veins outside the tibial system. Check documentation if the record only says deep vein thrombosis without a more specific site.
Coding tip
Capture the acute status and exact tibial vein location from the provider note or imaging report before coding.