Acquired Ureteropelvic Junction Obstruction

A new code N13.0 , Hydronephrosis with ureteropelvic junction obstruction, has been created at category N13 , Obstructive and reflux uropathy, to uniquely identify acquired obstruction of ureteropelvic junction (UPJ) when hydronephrosis is present. UPJ obstruction is described as an obstruction of the flow of urine from the renal pelvis to the proximal ureter. Congenital abnormalities may be observed in both adults and children as a result of infections, scarring, or a crossing vessel. UPJ obstruction may also be seen in adults following previous surgery or other disorders that can cause inflammation of the upper urinary tract. Hydronephrosis is characterized...

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Note:  The following article synopsis was NOT provided by the AHA. It was created by Find-A-Code/innoviHealth.

Article Overview

This article covers an ICD-10-CM update related to acquired ureteropelvic junction obstruction, including the clinical context of hydronephrosis and the role of the American Urological Association in requesting a distinct classification. It is relevant to coders, urology practices, and anyone tracking genitourinary diagnosis coding updates. The article provides background on the condition, why a distinct code was created, and how the topic is framed within the obstructive and reflux uropathy category.

Why This Topic Matters

It helps readers understand a diagnosis coding change affecting genitourinary conditions and clarifies the broader clinical and organizational context behind the update.

What You Will Learn

  • How acquired ureteropelvic junction obstruction is discussed in the context of ICD-10-CM coding
  • Why hydronephrosis is part of the coding update discussed in the article
  • What organizational request is associated with the creation of a distinct code
  • How the article situates the topic within obstructive and reflux uropathy

Who Should Read This

  • Medical coders
  • Coding auditors
  • Urology practices
  • Health information management professionals
  • Revenue cycle staff

Codes Discussed

Code Ranges Discussed

  • ICD-10-CM: N13

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