20Developmental anomalies Structural developmental anomalies primarily affecting one body system Structural developmental anomalies of the breast
LB63
category
Accessory nipple
Definition A condition caused by development of supernumerary nipples during the antenatal period. This condition is characterised by the presence of nipples or nipple-like structures additional to the normal two. This condition may be asymptomatic.
Also indexed as
Accessory nipple Supernumerary nipple ectopic nipple extra nipple hyperthelia polythelia
Nearby in Structural developmental anomalies of the breast
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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