21Symptoms, signs or clinical findings, not elsewhere classified
Mental or behavioural symptoms, signs or clinical findings
MB23Symptoms or signs involving appearance or behaviour
MB23.0
category
Aggressive behaviour
Definition Actions intended to threaten or hurt another person or to damage property that may be physical, verbal, or symbolic (e.g., acting against the other person's interests). Aggressive behaviour may be appropriate and self-protective, or inappropriate, hostile, and destructive.
Also indexed as
Aggressive behaviour Violent behaviour physical violence
Nearby in Symptoms or signs involving appearance or behaviour
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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