DB50.0

ICD-11 MMS 2026-01

Anal fissure

Description

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.

Index terms

  • Anal fissure
  • Acute anal fissure
  • acute post anal fissure
Show allHide
  • acute post anus fissure
  • acute postanal fissure
  • Chronic anal fissure

Exclusions from above levels

  • DB70.00 – Anal abscess
  • LB17 – congenital anomalies of the anal canal
  • 01 – Certain infectious or parasitic diseases
Show allHide
  • 02 – Neoplasms
  • 05 – Endocrine, nutritional or metabolic diseases
  • 06 – Mental, behavioural or neurodevelopmental disorders
  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

  • DB50.1 – Anal fistula
  • DB50.2 – Anorectal fistula
  • DB50.Y – Other specified fissure or fistula of anal regions
  • DB50.Z – Fissure or fistula of anal regions, unspecified

Foundation entity

Anal fissure – http://id.who.int/icd/entity/677675737

Allowed postcoordination axes

Part of: DB50: Fissure or fistula of anal regions › 13: Diseases of the digestive system