DD91

ICD-11 MMS 2026-01

Irritable bowel syndrome or certain specified functional bowel disorders

Description

This group incorporates functional bowel disorders which principally present symptoms attributable to the intestinal tract in the absence of specific and unique organic pathology in the small and large intestine.

Inclusions

  • Functional intestinal disorders NOS

Excludes

  • 6B23 – Hypochondriasis
  • 6C20 – Bodily distress disorder

Exclusions from above levels

  • 21 – Symptoms, signs or clinical findings, not elsewhere classified
  • 01 – Certain infectious or parasitic diseases
  • 02 – Neoplasms
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  • 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

Child codes

  • DD91.0 – Irritable bowel syndrome
  • DD91.1 – Functional constipation
  • DD91.2 – Functional diarrhoea
  • DD91.3 – Functional bloating
  • DD91.4 – Functional abdominal pain syndrome
  • DD91.Y – Other specified irritable bowel syndrome or functional bowel disorders
  • DD91.Z – Irritable bowel syndrome or functional bowel disorders, unspecified

Sibling codes

  • DD90 – Functional oesophageal or gastroduodenal disorders
  • DD92 – Functional anorectal disorders
  • DD93 – Functional digestive disorders of infants, toddlers or children
  • DD94 – Functional gallbladder disorder
  • DD95 – Functional sphincter of Oddi disorder
  • DD9Y – Other specified functional gastrointestinal disorders
  • DD9Z – Functional gastrointestinal disorders, unspecified

Foundation entity

Irritable bowel syndrome or certain specified functional bowel disorders – http://id.who.int/icd/entity/530888618

Allowed postcoordination axes

Part of: 13: Diseases of the digestive system