20Developmental anomalies
Structural developmental anomalies primarily affecting one body system
Structural developmental anomalies of the urinary system
LB31Structural developmental anomalies of urinary tract
LB31.1
category
Congenital primary megaureter
Definition Congenital primary megaureter is an idiopathic condition in which the bladder and bladder outlet are normal but the ureter is dilated to some extent. It may be obstructed, refluxing or unobstructed and not refluxing.
Also indexed as
Congenital dilatation of ureter Congenital megaloureter Congenital primary megaureter Congenital primary megaureter, nonrefluxing and unobstructed form Congenital primary megaureter, obstructed form Congenital primary megaureter, refluxing form congenital megaureter congenital ureteral dilatation
Nearby in Structural developmental anomalies of urinary tract
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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