GB56.1

ICD-11 MMS 2026-01

Hydronephrosis with ureteral obstruction

Description

Intrinsic stenosis or stricture or extrinsic obstruction of the ureter, except at the ureteropelvic junction or at the ureteral orifice, causing distension of the pelvis and calices of the kidney with urine.

Index terms

  • Hydronephrosis with ureteral obstruction
  • hydronephrosis with ureteral stricture, not elsewhere classified
  • Hydronephrosis with ureteral obstruction, acquired
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  • Hydronephrosis with ureteral obstruction (except the uretero-pelvic junction and the ureteral orifice), acquired
  • Hydronephrosis with ureteral obstruction, acquired, due to cause classified elsewhere
  • Hydronephrosis with ureteral obstruction, congenital
  • Hydronephrosis with ureteral obstruction except the ureteropelvic junction and the ureteral orifice
  • Kink in ureter with hydronephrosis
  • Stricture of ureter with hydronephrosis
  • ureteral stricture hydronephrosis

Excludes

  • LB31.0 – Congenital hydronephrosis

Exclusions from above levels

  • GB55 – Obstructive pyelonephritis
  • http://id.who.int/icd/entity/1746821938 – Calculus of kidney and ureter without hydronephrosis
  • 4A43.2Y – Sjögren syndrome with renal tubulo-interstitial disorders
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  • 4B22 – Renal tubulo-interstitial disorders in simple cryoglobulinaemia
  • 5C60.1 – Renal tubulo-interstitial disorders in cystinosis
  • GB82 – Autosomal dominant tubulointerstitial disease
  • GB90.Y – pyeloureteritis cystica
  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

  • GB56.0 – Hydronephrosis with ureteropelvic junction obstruction
  • GB56.2 – Hydronephrosis with ureteral orifice obstruction
  • GB56.3 – Hydronephrosis due to bladder obstruction
  • GB56.4 – Other or unspecified hydronephrosis
  • GB56.5 – Hydronephrosis and reflux nephropathy with vesicoureteral or vesico-uretero-renal reflux
  • GB56.Y – Other specified obstructive or reflux nephropathy
  • GB56.Z – Obstructive or reflux nephropathy, unspecified

Foundation entity

Hydronephrosis with ureteral obstruction – http://id.who.int/icd/entity/1137718649

Allowed postcoordination axes

Part of: GB56: Obstructive or reflux nephropathy › 16: Diseases of the genitourinary system