XExtension Codes
Aetiology
Infectious Agents
XN3BHVirus
XN6FR
category
Retrovirus
Definition This is an RNA virus that replicates in a host cell. First it uses its own reverse transcriptase enzyme to produce DNA from its RNA genome, reverse of the usual pattern, thus retro (backwards).
Also indexed as
Retrovirus
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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