Anal abscess

This code represents a localized collection of pus within the tissues surrounding the anus, typically caused by an infection of the anal glands. It manifests as a painful, swollen, and tender area near the anal opening.

Apply this code when documentation clearly indicates a diagnosis of an anal abscess, excluding those specifically identified as intrasphincteric. Supporting documentation should describe the presence of an abscess in the perianal or ischiorectal region.

• Differentiate from perianal fistula, which is a chronic tract often resulting from a drained abscess.
• Review documentation carefully to rule out an intrasphincteric abscess, which codes to K61.4.
• Consider additional codes for any underlying conditions or complications, such as Crohn's disease if documented.