Chronic embolism and thrombosis of unsp popliteal vein

This code signifies a persistent blockage within an unspecified popliteal vein, located behind the knee, caused by either an embolus (a traveling clot) or a thrombus (a stationary clot). The "chronic" designation indicates that this condition has been ongoing for an extended period, rather than being an acute event.

Assign this code when medical record documentation clearly states a chronic embolism or thrombosis affecting the popliteal vein, and the specific laterality (left or right) is not documented. Supporting documentation would include imaging reports (e.g., ultrasound, venography) confirming a chronic occlusion in the popliteal vein without specifying the side.

• Do not use this code if laterality (left or right) is specified; instead, select the more specific code (I82.531 or I82.532).
• Ensure the documentation explicitly states "chronic" to differentiate from acute events.
• This code is typically a secondary diagnosis, with the primary diagnosis often related to symptoms or underlying causes.