ICD-11 classes
16 Diseases of the genitourinary system
Diseases of the urinary system
Renal tubulo-interstitial diseases
GB56 — Obstructive or reflux nephropathy

ICD-11 GB56 — Obstructive or reflux nephropathy

Distention of the pelvis and calices of the kidney with urine as a result of obstruction of the ureter or as a result of a vesicoureteral or vesicoureterorenal reflux of urine. Diffuse or focal cortical scarring and chronic tubulointerstitial nephritis may be present.

The diagnosis includes nothing.

It excludes 2 items.

  • Calculus of kidney and ureter without hydronephrosis (GB70-GB7Z)
  • Obstructive pyelonephritis (GB55)

Diagnosis with code GB56 contains 8 clarifying diagnoses:

  1. GB56.0 — Hydronephrosis with ureteropelvic junction obstruction
  2. GB56.1 — Hydronephrosis with ureteral obstruction
  3. GB56.2 — Hydronephrosis with ureteral orifice obstruction
  4. GB56.3 — Hydronephrosis due to bladder obstruction
  5. GB56.4 — Other or unspecified hydronephrosis
  6. GB56.5 — Hydronephrosis and reflux nephropathy with vesicoureteral or vesico-uretero-renal reflux
  7. GB56.Y — Other specified obstructive or reflux nephropathy
  8. GB56.Z — Obstructive or reflux nephropathy, unspecified

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