Home > 2015 ICD-9-CM Diagnosis Codes > Diseases Of The Genitourinary System 580-629 > Other Diseases Of Urinary System 590-599 > Hydronephrosis 591-
Specific code 2015 ICD-9-CM Diagnosis Code 591
Hydronephrosis
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 591 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 591 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 591 converts approximately to:
  • 2015/16 ICD-10-CM N13.30 Unspecified hydronephrosis
Approximate Synonyms
  • Acquired hydronephrosis
  • Hydronephrosis (swelling kidney from backup of urine)
  • Hydronephrosis due to ureteral stricture
  • Hydronephrosis w renal and ureteral calculus obstruction
  • Hydronephrosis w ureteral stricture
  • Hydronephrosis with obstruction by stones
  • Hydronephrosis with renal and ureteral calculous obstruction
  • Hydronephrosis with ureteral stricture
  • Hydronephrosis, acquired
Clinical Information
  • Abnormal enlargement of a kidney, which may be caused by blockage of the ureter (such as by a kidney stone) or chronic kidney disease that prevents urine from draining into the bladder
  • Abnormal enlargement or swelling of a kidney due to dilation of the kidney calices and the kidney pelvis. It is often associated with obstruction of the ureter or chronic kidney diseases that prevents normal drainage of urine into the urinary bladder
  • Collection of urine in the renal pelvis that results in dilatation of the renal pelvis and calyces. It is caused by obstruction of urine flow, nephrolithiasis, or vesicoureteral reflux. Signs and symptoms include flank pain, nausea, vomiting, fever, and dysuria
  • Distention of the pelvis and calices of the kidney with urine, as a result of obstruction of the ureter, with accompanying atrophy of the parenchyma of the organ
  • Water retention in the kidney
591 Excludes
Applies To
  • Hydrocalycosis
  • Hydronephrosis
  • Hydroureteronephrosis
ICD-9-CM Volume 2 Index entries containing back-references to 591:
  • Atrophy, atrophic
    • hydronephrosis 591
    • kidney (senile) (see also Sclerosis, renal) 587
      • with hypertension (see also Hypertension, kidney) 403.90
      • congenital 753.0
      • hydronephrotic 591
      • infantile 753.0
  • Contraction, contracture, contracted
    • kidney (granular) (secondary) (see also Sclerosis, renal) 587
      • congenital 753.3
      • hydronephritic 591
      • pyelonephritic (see also Pyelitis, chronic) 590.00
      • tuberculous (see also Tuberculosis) 016.0
  • Cyst (mucus) (retention) (serous) (simple)
    • kidney (congenital) 753.10
      • acquired 593.2
      • calyceal (see also Hydronephrosis) 591
      • multiple 753.19
      • pyelogenic (see also Hydronephrosis) 591
      • simple 593.2
      • single 753.11
      • solitary (not congenital) 593.2
  • Hydrocalycosis (see also Hydronephrosis) 591
  • Hydrocalyx (see also Hydronephrosis) 591
  • Hydronephrosis 591
    • atrophic 591
    • due to S. hematobium 120.0
    • early 591
    • functionless (infected) 591
    • infected 591
    • intermittent 591
    • primary 591
    • secondary 591
    • tuberculous (see also Tuberculosis) 016.0
  • Hydroureteronephrosis (see also Hydronephrosis) 591
  • Infection, infected, infective (opportunistic) 136.9
    • hydronephrosis 591
  • Pelvioectasis 591
  • Pyelohydronephrosis 591
 590.9 ICD9Data.com 592 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 591 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
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