External thrombosed hemorrhoids

This code signifies the presence of an external hemorrhoid that has developed a blood clot (thrombosis) within it. This condition typically presents as an acutely painful, firm, and often purplish lump at the anal verge, distinct from internal hemorrhoids.

Apply this code when documentation explicitly states "thrombosed external hemorrhoids" or describes an acutely painful, firm, perianal mass consistent with a clotted external hemorrhoid. This is often diagnosed during a physical examination of the perianal area.

• Differentiate from non-thrombosed external hemorrhoids, which would be coded differently.
• Ensure the documentation specifies "external" and "thrombosed" to support this specific code.
• Consider any associated complications, such as ulceration or infection, which may require additional codes.