LB31.1

ICD-11 MMS 2026-01

Congenital primary megaureter

Description

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.

Index terms

  • Congenital primary megaureter
  • Congenital dilatation of ureter
  • Congenital megaloureter
Show allHide
  • congenital megaureter
  • congenital ureteral dilatation
  • Congenital primary megaureter, obstructed form
  • Congenital primary megaureter, refluxing form
  • Congenital primary megaureter, nonrefluxing and unobstructed form

Exclusions from above levels

  • http://id.who.int/icd/entity/733825440 – Inborn errors of metabolism

Sibling codes

  • LB31.0 – Congenital hydronephrosis
  • LB31.2 – Fetal lower urinary tract obstruction
  • LB31.3 – Exstrophy of urinary bladder
  • LB31.4 – Congenital diverticulum of urinary bladder
  • LB31.5 – Duplication of urethra
  • LB31.6 – Congenital megalourethra
  • LB31.7 – Megacystis-megaureter
  • LB31.8 – Atresia or stenosis of ureter
  • LB31.9 – Agenesis of ureter
  • LB31.A – Duplication of ureter
  • LB31.B – Malposition of ureter
  • LB31.C – Congenital absence of bladder or urethra
  • LB31.D – Congenital vesico-uretero-renal reflux
  • LB31.Y – Other specified structural developmental anomalies of urinary tract
  • LB31.Z – Structural developmental anomalies of urinary tract, unspecified

Foundation entity

Congenital primary megaureter – http://id.who.int/icd/entity/566805920

Allowed postcoordination axes

Part of: LB31: Structural developmental anomalies of urinary tract › 20: Developmental anomalies