ICD-10 Code I82.442 – Acute embolism and thrombosis of left tibial vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.442 – Acute embolism and thrombosis of left tibial vein
What it is
This code identifies an acute clot or embolus in the left tibial vein, a deep vein in the lower leg. Use it when documentation specifies the left tibial vein and an acute thrombotic or embolic event.
Clinical signs
Common findings include unilateral left lower-leg pain, swelling, tenderness, warmth, or redness. Clinical features vary; refer to documentation, and confirm the diagnosis with the provider’s stated vessel and acuity.
When to use this code
Use I82.442 when the record clearly documents acute embolism or thrombosis involving the left tibial vein. It fits inpatient, outpatient, and emergency encounters when the provider names this exact site. Check documentation if the clot is described only as a calf, distal, or deep vein thrombosis without vessel detail.
Do not use for
Do not use this code for chronic or old thrombosis, superficial vein thrombosis, or embolism in a different leg vein. If the documentation does not confirm the left tibial vein, check documentation.
Coding tip
Code the most specific vein named in the note; if left tibial vein is stated, do not default to a broader lower-extremity DVT code.