1B21.20

ICD-11 MMS 2026-01

Mycobacterium ulcerans infection

Description

Mycobacterium ulcerans infection (Buruli ulcer) typically presents as a subcutaneous nodule which breaks down to form a deep painless ulcer which commonly reaches a size of 15 cm in diameter but may extend further to cause extensive tissue damage. The organism is found in wetlands of tropical and subtropical regions of the world, particularly Africa.

Index terms

  • Mycobacterium ulcerans infection
  • Buruli ulcer
  • Mycobacterium ulcerans skin infection

Exclusions from above levels

  • 1B20 – Leprosy
  • http://id.who.int/icd/entity/2072728114 – Tuberculosis
  • NE83.1 – Infection arising from device, implant or graft, not elsewhere classified

Sibling codes

  • 1B21.2Y – Cutaneous infection due to other specified non-tuberculous mycobacteria
  • 1B21.2Z – Cutaneous infection due to unspecified non-tuberculous mycobacteria

Foundation entity

Mycobacterium ulcerans infection – http://id.who.int/icd/entity/1974989140

Part of: 1B21.2: Cutaneous non-tuberculous mycobacterial infection › 1B21: Infections due to non-tuberculous mycobacteria › 01: Certain infectious or parasitic diseases