I82.891

What This Code Means

This code describes a blood clot that has formed in a vein other than the major veins typically coded separately, and the condition is chronic (long-lasting) rather than newly developed. The clot may partially or completely block blood flow through the affected vein.

Coding Tips

• •Verify the specific vein location is documented and not one of the more common sites (like deep veins of the leg or pulmonary arteries) which have their own specific codes
• •Confirm the clot is chronic in nature; if acute or subacute, use code I82.90 or other acute thrombosis codes instead