N11.1 - Chronic obstructive pyelonephritis

  • Applicable to Chronic obstructive pyelonephritis
  • The 2025 edition of ICD10-CM N11.1 became effective on October 1, 2024.
  • This is the American ICD10-CM version of N11.1 - other international versions of ICD10 N11.1 may differ.
  • N11.1 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

 Inclusion Term

  • Pyelonephritis (chronic) associated with anomaly of pelviureteric junction
  • Pyelonephritis (chronic) associated with anomaly of pyeloureteric junction
  • Pyelonephritis (chronic) associated with crossing of vessel
  • Pyelonephritis (chronic) associated with kinking of ureter
  • Pyelonephritis (chronic) associated with obstruction of ureter
  • Pyelonephritis (chronic) associated with stricture of pelviureteric junction
  • Pyelonephritis (chronic) associated with stricture of ureter

Type 1 Excludes

  • calculous pyelonephritis (N20.9)
  • obstructive uropathy (N13.-)

The following codes above N11.1 contain annotation back-references that may be applicable to N11.1:

Chapter: N00-N99 Diseases of the genitourinary system

Section: N10-N16 Renal tubulo-interstitial diseases

Category: N11 Chronic tubulo-interstitial nephritis

   
Billable/Specific Code

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