ICD-10 Code I82.A2 – Chronic embolism and thrombosis of axillary vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.A2 – Chronic embolism and thrombosis of axillary vein
What it is
This code identifies a long-standing blood clot or embolus in the axillary vein, usually in the upper extremity. Use it when the condition is documented as chronic and involves that specific vein.
Clinical signs
Patients may have arm swelling, pain, heaviness, or visible collateral veins. Clinical features vary; refer to documentation and imaging or specialist notes confirming chronic axillary vein involvement.
When to use this code
Use I82.A2 when the provider documents chronic embolism or thrombosis of the axillary vein, whether as an active problem or a persistent sequela. It may appear after prior upper-extremity venous thrombosis with ongoing clot burden. Check documentation if the record does not clearly specify chronicity or vein location.
Do not use for
Do not use this code for acute upper-extremity thrombosis, superficial thrombophlebitis, or thrombosis in a different vein. Check documentation if the chart only says “DVT” without naming the axillary vein.
Coding tip
Confirm both chronicity and the exact vein in the provider note before assigning I82.A2.