1C43

ICD-11 MMS 2026-01

Actinomycetoma

Description

Actinomycetoma is a chronic progressive subcutaneous infection caused by implantation of aerobic branching actinomycetes through a skin wound. These organisms are filamentous bacteria which live as saprophytes in soil or on plants; the commonest infecting agents are Nocardia brasiliensis, Actinomadura madurae and Streptomyces somaliensis. The earliest stage of infection is a firm painless nodule but with time the whole area becomes hard and swollen with multiple papules, pustules and draining sinuses on the skin surface. Extension to underlying bones and joints can result in gross deformity.

Index terms

  • Actinomycetoma
  • Actinomycotic Madura foot
  • Actinomycotic mycetoma
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  • Mycetoma due to filamentous bacteria
  • Actinomycetoma due to Actinomadura species
  • Actinomadura Actinomycetoma
  • Actinomycetoma due to Streptomyces species
  • Actinomycetoma due to Nocardia species

Inclusions

  • Mycetoma due to filamentous bacteria

Excludes

Exclusions from above levels

  • NE83.1 – Infection arising from device, implant or graft, not elsewhere classified

Sibling codes

  • 1C10 – Actinomycosis
  • 1C11 – Bartonellosis
  • 1C12 – Whooping cough
  • 1C13 – Tetanus
  • 1C14 – Obstetrical tetanus
  • 1C15 – Tetanus neonatorum
  • 1C16 – Gas gangrene
  • 1C17 – Diphtheria
  • 1C18 – Brazilian purpuric fever
  • 1C19 – Legionellosis
  • 1C1A – Listeriosis
  • 1C1B – Nocardiosis
  • 1C1C – Meningococcal disease
  • 1C1D – Yaws
  • 1C1E – Pinta
  • 1C1F – Endemic non-venereal syphilis
  • 1C1G – Lyme borreliosis
  • 1C1H – Necrotising ulcerative gingivitis
  • 1C1J – Relapsing fever
  • 1C40 – Campylobacteriosis
  • 1C41 – Bacterial infection of unspecified site
  • 1C42 – Melioidosis
  • 1C44 – Non-pyogenic bacterial infections of the skin
  • 1C45 – Toxic shock syndrome
  • 1C4Y – Other specified bacterial diseases
  • 1C4Z – Unspecified bacterial disease

Foundation entity

Actinomycetoma – http://id.who.int/icd/entity/168432503

Part of: 01: Certain infectious or parasitic diseases