20Developmental anomalies
Chromosomal anomalies, excluding gene mutations
LD44Deletions of the autosomes
LD44.4Deletions of chromosome 4
LD44.40
category
Deletions of the long arm of chromosome 4
Also indexed as
4q21 deletion 4q21 deletion syndrome Deletions of the long arm of chromosome 4 Distal deletions of the long arm of chromosome 4 Medial deletions of the long arm of chromosome 4 Monosomy 4q21 Proximal deletions of the long arm of chromosome 4
Nearby in Deletions of chromosome 4
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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