ICD-11 classes
13 Diseases of the digestive system
Diseases of anal canal
Acquired anatomical alterations of the anal canal
DB50 — Fissure or fistula of anal regions
DB50.0 — Anal fissure

ICD-11 DB50.0 — Anal fissure

An anal fissure is a linear break or tear in the mucosa that lines the anal canal. It may occur when hard or large stools are passed after defecation and typically cause pain and bright red anal bleeding.

The diagnosis includes nothing.

The diagnosis excludes nothing.

It has no clarifying diagnoses.