1C11.00

ICD-11 MMS 2026-01

Oroya fever

Description

A disease commonly caused by an infection with the gram-negative bacteria Bartonella bacilliformis. This disease is characterised by severe haemolytic anaemia and transient immunosuppression. This disease may present with fever, malaise, or jaundice. Transmission is through the bite of infected sandflies from the genus Lutzomyia. Confirmation is by identification of Bartonella bacilliformis in a blood sample.

Index terms

  • Oroya fever
  • Bartonella fever
  • Systemic Carrión disease
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  • Systemic bartonellosis due to Bartonella bacilliformis
  • systemic bartonellosis

Exclusions from above levels

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

Sibling codes

Foundation entity

Oroya fever – http://id.who.int/icd/entity/1031219789

Part of: 1C11.0: Carrion disease › 1C11: Bartonellosis › 01: Certain infectious or parasitic diseases