Chronic embolism and thrombosis of deep vein of l low extrem

This code signifies a persistent or long-standing blockage within a deep vein of the left lower extremity, caused by either an embolus (a traveling clot) or a thrombus (a stationary clot). This condition impairs blood flow and can lead to chronic venous insufficiency, post-thrombotic syndrome, or other complications.

Use this code for patients diagnosed with a chronic deep vein thrombosis (DVT) or embolism affecting a deep vein in the left leg, excluding those specified elsewhere (e.g., femoral, popliteal). Documentation should clearly state the chronicity of the condition and the specific location within the left lower extremity, often supported by imaging studies like duplex ultrasound.

• Ensure documentation specifies "chronic" to differentiate from acute events.
• Verify the laterality (left) and the specific deep vein involved; if a more specific deep vein is documented (e.g., left femoral), a more precise code may be available.
• Consider sequencing this code with codes for any associated complications, such as post-thrombotic syndrome (I87.0-).