N13 - Obstructive and reflux uropathy

Version 2023
ICD-10:N13
Short Description:Obstructive and reflux uropathy
Long Description:Obstructive and reflux uropathy
Status: Not Valid for Submission
Version:ICD-10-CM 2023
Code Classification:
  • Diseases of the genitourinary system (N00–N99)
    • Renal tubulo-interstitial diseases (N10-N16)
      • Obstructive and reflux uropathy (N13)

N13 is a non-specific and non-billable ICD-10 code code, consider using a code with a higher level of specificity for a diagnosis of obstructive and reflux uropathy. The code is not specific and is NOT valid for the year 2023 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding for Obstructive and reflux uropathy

Non-specific codes like N13 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for obstructive and reflux uropathy:

  • BILLABLE CODE - Use N13.0 for Hydronephrosis with ureteropelvic junction obstruction
  • BILLABLE CODE - Use N13.1 for Hydronephrosis with ureteral stricture, not elsewhere classified
  • BILLABLE CODE - Use N13.2 for Hydronephrosis with renal and ureteral calculous obstruction
  • NON-BILLABLE CODE - N13.3 for Other and unspecified hydronephrosis
  • BILLABLE CODE - Use N13.30 for Unspecified hydronephrosis
  • BILLABLE CODE - Use N13.39 for Other hydronephrosis
  • BILLABLE CODE - Use N13.4 for Hydroureter
  • BILLABLE CODE - Use N13.5 for Crossing vessel and stricture of ureter without hydronephrosis
  • BILLABLE CODE - Use N13.6 for Pyonephrosis
  • NON-BILLABLE CODE - N13.7 for Vesicoureteral-reflux
  • BILLABLE CODE - Use N13.70 for Vesicoureteral-reflux, unspecified
  • BILLABLE CODE - Use N13.71 for Vesicoureteral-reflux without reflux nephropathy
  • NON-BILLABLE CODE - N13.72 for Vesicoureteral-reflux with reflux nephropathy without hydroureter
  • NON-BILLABLE CODE - N13.73 for Vesicoureteral-reflux with reflux nephropathy with hydroureter
  • BILLABLE CODE - Use N13.8 for Other obstructive and reflux uropathy
  • BILLABLE CODE - Use N13.9 for Obstructive and reflux uropathy, unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to this diagnosis code:


Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

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NIH: National Institute of Diabetes and Digestive and Kidney Diseases


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You have two kidneys, each about the size of your fist. They are near the middle of your back, just below the rib cage. Inside each kidney there are about a million tiny structures called nephrons. They filter your blood. They remove wastes and extra water, which become urine. The urine flows through tubes called ureters. It goes to your bladder, which stores the urine until you go to the bathroom.

Most kidney diseases attack the nephrons. This damage may leave kidneys unable to remove wastes. Causes can include genetic problems, injuries, or medicines. You have a higher risk of kidney disease if you have diabetes, high blood pressure, or a close family member with kidney disease. Chronic kidney disease damages the nephrons slowly over several years. Other kidney problems include:

Your doctor can do blood and urine tests to check if you have kidney disease. If your kidneys fail, you will need dialysis or a kidney transplant.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases


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Code History