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Chapters ENES DE

XExtension Codes
Aetiology
Infectious Agents
XN3BHVirus
XN0ACFlavivirus

XN5TU category

Orthoflavivirus

3 subordinate codes

XN9S3Yellow fever virus
XN1H2Zika virus
XN4CADengue virus

Also indexed as

Orthoflavivirus

Nearby in Flavivirus

XN9ZKJapanese encephalitis virus
XN5QWSaint Louis encephalitis virus
XN0L1Tick-borne encephalitis virus
XN4E1West Nile virus
XN7C2Rocio virus
XN7W2Alkhurma hemorrhagic fever virus
XN2JRKyasanur Forest disease virus
XN0MHUsutu virus

PreviousXN4YZ — Omsk haemorrhagic fever virus

Browse ICD-11

01Certain infectious or parasitic diseases
02Neoplasms
03Diseases of the blood or blood-forming organs
04Diseases of the immune system
05Endocrine, nutritional or metabolic diseases
06Mental, behavioural or neurodevelopmental disorders
07Sleep-wake disorders
08Diseases of the nervous system
09Diseases of the visual system
10Diseases of the ear or mastoid process
11Diseases of the circulatory system
12Diseases of the respiratory system
13Diseases of the digestive system
14Diseases of the skin
15Diseases of the musculoskeletal system or connective tissue
16Diseases of the genitourinary system
17Conditions related to sexual health
18Pregnancy, childbirth or the puerperium
19Certain conditions originating in the perinatal period
20Developmental anomalies
21Symptoms, signs or clinical findings, not elsewhere classified
22Injury, poisoning or certain other consequences of external causes
23External causes of morbidity or mortality
24Factors influencing health status or contact with health services
25Codes for special purposes
26Supplementary Chapter Traditional Medicine Conditions
VSupplementary section for functioning assessment
XExtension Codes
Severity Scale Value
Temporality
Aetiology
Topology Scale Value
Anatomy and topography
Histopathology
Dimensions of injury
Dimensions of external causes
Consciousness
5 more
Causality
Infectious Agents
XN74MBacteria
XN3BHVirus
XN8AYFungi
XN9S1Parasites
Other Pathogens
XN83DCoronavirus
XN41MHepatitis virus
XN2P0Enterovirus
XN6R5Filovirus
XN0ACFlavivirus
XN7V1Human herpesvirus
XN8JYHuman papillomavirus
XN5SGOrthomyxovirus
XN33BLyssavirus
20 more
XN9ZKJapanese encephalitis virus
XN5QWSaint Louis encephalitis virus
XN0L1Tick-borne encephalitis virus
XN4E1West Nile virus
XN7C2Rocio virus
XN7W2Alkhurma hemorrhagic fever virus
XN2JRKyasanur Forest disease virus
XN0MHUsutu virus
XN6F7Louping ill virus
XN4YZOmsk haemorrhagic fever virus
XN5TUOrthoflavivirus
XN9S3Yellow fever virus
XN1H2Zika virus
XN4CADengue virus

International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).

Release 2026-01. View this entity in the official WHO ICD-11 browser.

This page reproduces WHO classification content for reference. It is not medical advice and must not be used to diagnose or treat. For coding decisions, consult the official release and your national coding guidelines.

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