ICD-10 Code I82.4Z2 – Acute embolism and thrombosis of unspecified deep veins of left distal lower extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.4Z2 – Acute embolism and thrombosis of unspecified deep veins of left distal lower extremity
What it is
This code identifies an acute blood clot or embolus in a deep vein of the left lower leg, below the knee, when the exact vein is not specified. Use it for a new or active DVT in the distal left leg.
Clinical signs
Typical findings include unilateral leg pain, swelling, tenderness, warmth, or redness. Clinical features vary; refer to documentation, and confirm that the clot is in a deep vein of the left distal lower extremity.
When to use this code
Use this code when the provider documents an acute embolism or thrombosis in an unspecified deep vein of the left distal lower extremity. It fits cases where the site is clearly distal and left-sided, but the exact vein is not named. If laterality, acuity, or vein location is unclear, check documentation.
Do not use for
Do not use this code for chronic or old thrombosis, superficial vein thrombosis, or DVT in a different limb or location. Also avoid it when the record specifies a more precise deep vein site.
Coding tip
Verify both laterality and acuity in the note before assigning I82.4Z2.