ICD-10 Code I82.5Z2 – Chronic embolism and thrombosis of unspecified deep veins of left distal lower extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.5Z2 – Chronic embolism and thrombosis of unspecified deep veins of left distal lower extremity
What it is
This code identifies a chronic blood clot or embolic obstruction in the deep veins of the left lower leg, with the exact vein not specified. It indicates a long-standing venous blockage affecting the distal left lower extremity.
Clinical signs
Clinical features vary; refer to documentation. Commonly documented findings include persistent leg swelling, pain, heaviness, skin discoloration, or a history of prior deep vein thrombosis in the left distal leg.
When to use this code
Use this code when the provider documents chronic embolism or thrombosis in an unspecified deep vein of the left distal lower extremity. It is appropriate when the condition is longstanding, not acute, and the affected vein is not named more specifically. Check documentation if laterality, chronicity, or vein location is unclear.
Do not use for
Do not use this code for acute deep vein thrombosis, superficial vein thrombosis, or thrombosis in a different limb. If the record specifies a more precise vein or a different chronic venous disorder, code that diagnosis instead.
Coding tip
Confirm both chronic status and left-sided distal deep-vein location before assigning I82.5Z2.