1F28.4

ICD-11 MMS 2026-01

Kerion

Description

Kerion results from a severe host inflammatory response to dermatophyte infection of the hair follicles of the scalp or beard. It typically presents as a single painful, severely inflammatory, suppurating boggy mass and is most commonly a reaction to a zoophilic dermatophyte infection especially Trichophyton verrucosum (cattle ringworm) or Trichophyton mentagrophytes.

Index terms

  • Kerion

Exclusions from above levels

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  • CA70 – Hypersensitivity pneumonitis due to organic dust
  • NE83.1 – Infection arising from device, implant or graft, not elsewhere classified

Sibling codes

  • 1F28.0 – Dermatophytosis of scalp
  • 1F28.1 – Dermatophytosis of nail
  • 1F28.2 – Dermatophytosis of foot
  • 1F28.3 – Genitocrural dermatophytosis
  • 1F28.5 – Disseminated dermatophytosis
  • 1F28.Y – Other specified dermatophytosis
  • 1F28.Z – Dermatophytosis, unspecified

Foundation entity

Kerion – http://id.who.int/icd/entity/1449494917

Allowed postcoordination axes

Part of: 1F28: Dermatophytosis › 01: Certain infectious or parasitic diseases