Chronic embolism and thrombosis of axillary vein, bilateral

This code signifies the presence of persistent blood clots or blockages within both axillary veins, which are major veins located in the armpit region. These clots are long-standing, rather than acute, and can impede blood flow from the upper extremities.

Apply this code when documentation explicitly states a chronic (not acute) embolism or thrombosis affecting both the left and right axillary veins. This typically follows imaging studies (e.g., ultrasound, venography) confirming the bilateral and chronic nature of the venous obstruction.

• Differentiate carefully between acute and chronic conditions; this code is strictly for chronic presentations.
• Ensure documentation specifies bilateral involvement; separate codes exist for unilateral conditions.
• Do not use if the thrombosis is due to a catheter; specific codes for catheter-related thrombosis should be considered.