1C22ICD-11 MMS 2026-01
Infections due to Chlamydia psittaci
Description
Any condition caused by an infection with the gram-negative bacteria Chlamydia psittaci. These conditions are characterised by variable clinical presentations such as fever, cough, headaches, chills, fatigue, nausea, vomiting, diarrhoea, or pneumonia. Transmission is commonly by inhalation of aerosol contaminated with body fluids from infected birds, or direct contact with infected birds. Confirmation is by identification of Chlamydia psittaci.
Index terms
- Infections due to Chlamydia psittaci
- Chlamydophila psittaci infection
- Infections due to Chlamydophila psittaci
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- ornithosis
- parrot fever
- psittacosis
Inclusions
- ornithosis
- parrot fever
- psittacosis
Exclusions from above levels
NE83.1– Infection arising from device, implant or graft, not elsewhere classified
Sibling codes
Foundation entity
Infections due to Chlamydia psittaci – http://id.who.int/icd/entity/1937339080
Allowed postcoordination axes
Part of: 01: Certain infectious or parasitic diseases