Acute embolism and thrombosis of left axillary vein

This code signifies the sudden blockage of the left axillary vein by an embolus (a traveling clot) or a thrombus (a clot formed in situ). This condition typically presents with acute onset of pain, swelling, and discoloration in the left upper extremity, often extending into the shoulder and neck. It represents an urgent vascular event requiring prompt diagnosis and management.

Use this code when documentation clearly indicates an acute embolism or thrombosis specifically affecting the left axillary vein. This diagnosis is often supported by imaging studies such as ultrasound, venography, or CT venography confirming the presence of an acute clot in this specific vessel. It applies to both primary thrombotic events and embolic events originating elsewhere.

• Ensure the documentation specifies "acute" to differentiate from chronic or unspecified thrombosis.
• Verify the laterality is explicitly stated as "left"; do not assume if not documented.
• Distinguish from other upper extremity deep vein thromboses (UEDVTs) in different venous segments (e.g., subclavian, brachial) to ensure accurate site specificity.