Obstructive or reflux nephropathy

Definition

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.

Exclusions

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

8 subordinate codes

• GB56.0Hydronephrosis with ureteropelvic junction obstruction
• GB56.1Hydronephrosis with ureteral obstruction
• GB56.2Hydronephrosis with ureteral orifice obstruction
• GB56.3Hydronephrosis due to bladder obstruction
• GB56.4Other or unspecified hydronephrosis
• GB56.5Hydronephrosis and reflux nephropathy with vesicoureteral or vesico-uretero-renal reflux
• 4B4YOther specified diseases of the immune system
• 4B4ZDiseases of the immune system, unspecified

Nearby in Renal tubulo-interstitial diseases

• GB50Acute tubulo-interstitial nephritis
• GB51Acute pyelonephritis
• GB52Acute tubular necrosis
• GB53Acute renal papillary necrosis
• GB54Tubulo-interstitial nephritis, not specified as acute or chronic
• GB55Chronic tubulo-interstitial nephritis
• GB57Nephrocalcinosis
• GB58Pyonephrosis