EE12.1

ICD-11 MMS 2026-01

Onychomycosis

Description

Fungal infection of fingernails and/or toenails due most commonly to dermatophytes (tinea unguium) or yeasts, especially Candida species.

Index terms

  • Onychomycosis
  • Fungal infection of the nails
  • Onychomycosis classified according to clinical pattern
Show allHide
  • Superficial white onychomycosis
  • Distal and lateral subungual onychomycosis
  • Proximal subungual onychomycosis
  • Total dystrophic onychomycosis

Inclusions

  • Fungal infection of the nails

Excludes

  • 1F23.13 – Candidosis of nail or paronychium

Foundation children elsewhere

  • 1F28.1 – Dermatophytosis of nail
  • 1F2D.5 – Onychomycosis due to non-dermatophyte mould

Sibling codes

  • EE12.0 – Acute bacterial paronychia
  • EE12.Y – Other specified infections of the nail or perionychium
  • EE12.Z – Infections of the nail or perionychium, unspecified

Foundation entity

Onychomycosis – http://id.who.int/icd/entity/410058129

Allowed postcoordination axes

Part of: EE12: Infections of the nail or perionychium › 14: Diseases of the skin