1B90.0

ICD-11 MMS 2026-01

Spirillosis

Description

A disease caused by an infection with the gram-negative bacteria Spirillum minus. This disease is initially characterised by local inflammation, followed by fever, lymphadenitis, and headache. Transmission is commonly by direct contact through the bite or scratch of an infected rat. Confirmation is by identification of Spirillum in blood or tissue samples.

Index terms

  • Spirillosis
  • Sodoku
  • Sokosho
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  • Spirillary rat-bite fever
  • rat-bite fever due to Spirillum minus

Inclusions

  • Sodoku

Exclusions from above levels

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

Sibling codes

  • 1B90.1 – Streptobacillosis
  • 1B90.Y – Other specified rat-bite fevers
  • 1B90.Z – Rat-bite fevers, unspecified

Foundation entity

Spirillosis – http://id.who.int/icd/entity/1104357482

Part of: 1B90: Rat-bite fevers › 01: Certain infectious or parasitic diseases