Chronic embolism and thombos unsp veins of l up extrem

This code signifies a persistent or long-standing blockage within an unspecified vein of the patient's left arm, caused by either an embolus (a traveling clot) or a thrombus (a stationary clot). It indicates a chronic vascular obstruction affecting the venous return from the left upper limb.

Apply this code when documentation clearly states a chronic venous embolism or thrombosis located in an unspecified vein of the left upper extremity. This would typically be supported by imaging studies (e.g., ultrasound, venography) confirming the presence and chronicity of the clot, along with clinical signs and symptoms.

• Ensure documentation specifies "chronic" and "left upper extremity" for accurate code assignment.
• Avoid using this code if a more specific vein (e.g., subclavian, axillary) is identified; instead, use the appropriate specific vein code.
• Consider sequencing this code after any acute embolism or thrombosis if the chronic condition developed from an acute event and both are being treated.