ICD-10 Code I82.602 – Acute embolism and thrombosis of unspecified veins of left upper extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.602 – Acute embolism and thrombosis of unspecified veins of left upper extremity
What it is
This code identifies an acute blood clot or embolus in an unspecified vein of the left upper extremity. Use it when the record states the left arm vein is involved but does not name a more specific vein.
Clinical signs
Clinical features may include unilateral arm swelling, pain, warmth, tenderness, or visible venous distention. Clinical features vary; refer to documentation, and confirm that the condition is acute and venous.
When to use this code
Use I82.602 when the provider documents acute embolism or thrombosis in a vein of the left upper extremity and does not specify the exact vein. It also fits when the note clearly supports an acute upper-extremity venous clot on the left side. Do not assume laterality or acuity from imaging alone; the documentation should support both.
Do not use for
Do not use this code for chronic thrombosis, superficial thrombophlebitis, or clots in arteries. If the vein, side, or acuity is different or unclear, check documentation.
Coding tip
Verify that “acute,” “left,” and “vein” are all documented before assigning I82.602.