ICD-10-CM N11: Chronic tubulo-interstitial nephritis

ICD-10-CM Diagnosis Code (2025)

Official Description for N11

Chronic tubulo-interstitial nephritis

Coding Notes & Guidelines for N11

Includes Notes
  • chronic infectious interstitial nephritis
  • chronic pyelitis
  • chronic pyelonephritis
Excludes1: Not Coded Here

vesicoureteral reflux NOS (N13.70)

Excludes1: Not Coded Here
  • calculous pyelonephritis (N20.9)
  • obstructive uropathy (N13.-)
Use Additional Code

code (B95-B97), to identify infectious agent.

Inclusion Terms

Pyelonephritis (chronic) associated with (vesicoureteral) reflux

Inclusion Terms
  • 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
Inclusion Terms

Nonobstructive chronic pyelonephritis NOS

Inclusion Terms
  • Chronic interstitial nephritis NOS
  • Chronic pyelitis NOS
  • Chronic pyelonephritis NOS

Child Codes (More Specific Codes for N11):

N11.0 - Nonobstructive reflux-associated chronic pyelonephritis N11.1 - Chronic obstructive pyelonephritis N11.8 - Other chronic tubulo-interstitial nephritis N11.9 - Chronic tubulo-interstitial nephritis, unspecified

About ICD-10-CM Code N11 (Chronic tubulo-interstitial nephritis)

ICD-10-CM code N11 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM N11 became effective on October 1, 2024.

This page provides detailed information about N11 - Chronic tubulo-interstitial nephritis. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Chronic tubulo-interstitial nephritis.