DD91.02

ICD-11 MMS 2026-01

Irritable bowel syndrome, mixed type

Description

This is a bowel pattern subtype of irritable bowel syndrome, characterised by alteration of bowel habits having both diarrhoea and constipation. The subtype having diarrhoea and constipation alternatively often varying over time is also considered as synonymous.

Index terms

  • Irritable bowel syndrome, mixed type
  • Alternating bowel habit
  • IBS-M - [Irritable bowel syndrome, mixed type]

Exclusions from above levels

  • 6B23 – Hypochondriasis
  • 6C20 – Bodily distress disorder
  • 21 – Symptoms, signs or clinical findings, not elsewhere classified
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  • 01 – Certain infectious or parasitic diseases
  • 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

  • DD91.00 – Irritable bowel syndrome, constipation predominant
  • DD91.01 – Irritable bowel syndrome, diarrhoea predominant
  • DD91.03 – Irritable bowel syndrome, unsubtyped
  • DD91.0Z – Irritable bowel syndrome, type unspecified

Foundation entity

Irritable bowel syndrome, mixed type – http://id.who.int/icd/entity/1002275014

Allowed postcoordination axes

Part of: DD91.0: Irritable bowel syndrome › DD91: Irritable bowel syndrome or certain specified functional bowel disorders › 13: Diseases of the digestive system