1F66

ICD-11 MMS 2026-01

Filariasis

Description

infections with nematodes of the superfamily Filarioidea; presence of living worms in the body is mainly asymptomatic but the death of adult worms leads to granulomatous inflammation and permanent fibrosis; organisms of the genus Elaeophora infect wild elk and domestic sheep causing ischaemic necrosis of the brain, blindness, and dermatosis of the face.

Excludes

  • 1F6A – Onchocerciasis

Exclusions from above levels

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

Child codes

  • 1F66.0 – Loiasis
  • 1F66.1 – Mansonelliasis
  • 1F66.2 – Filariasis due to Brugia species
  • 1F66.3 – Lymphatic filariasis
  • 1F66.4 – Subcutaneous dirofilariasis
  • 1F66.Y – Other specified filariasis
  • 1F66.Z – Filariasis, unspecified

Sibling codes

  • 1F60 – Angiostrongyliasis
  • 1F61 – Anisakiasis
  • 1F62 – Ascariasis
  • 1F63 – Capillariasis
  • 1F64 – Dracunculiasis
  • 1F65 – Enterobiasis
  • 1F67 – Gnathostomiasis
  • 1F68 – Hookworm diseases
  • 1F69 – Oesophagostomiasis
  • 1F6A – Onchocerciasis
  • 1F6B – Strongyloidiasis
  • 1F6C – Syngamosis
  • 1F6D – Toxocariasis
  • 1F6E – Trichinosis
  • 1F6F – Trichostrongyliasis
  • 1F6G – Trichuriasis
  • 1F6H – Uncinariosis
  • 1F6Y – Other specified diseases due to nematodes
  • 1F6Z – Diseases due to nematodes, unspecified

Foundation entity

Filariasis – http://id.who.int/icd/entity/1975325075

Allowed postcoordination axes

Part of: 01: Certain infectious or parasitic diseases