DB33.11

ICD-11 MMS 2026-01

Lymphocytic colitis

Description

Lymphocytic colitis is an intestinal inflammatory disorder characterised by increased intraepithelial lymphocytes and manifesting as chronic watery diarrhoea, abdominal pain, nausea, incontinence and faecal urgency. Together with collagenous colitis it makes up a group known as microscopic colitis.

Index terms

  • Lymphocytic colitis

Exclusions from above levels

  • http://id.who.int/icd/entity/588616678 – Gastroenteritis or colitis of infectious origin
  • http://id.who.int/icd/entity/598093212 – Inflammatory bowel diseases
  • 01 – Certain infectious or parasitic diseases
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  • 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

  • DB33.10 – Collagenous colitis
  • DB33.1Y – Other specified microscopic colitis
  • DB33.1Z – Microscopic colitis, unspecified

Foundation entity

Lymphocytic colitis – http://id.who.int/icd/entity/1629251056

Allowed postcoordination axes

Part of: DB33.1: Microscopic colitis › DB33: Certain noninfectious colitis or proctitis › 13: Diseases of the digestive system