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HomeICD-10 CodesN11
ICD-10-CM
Non-billable

N11

Classification
Category:Diseases of the genitourinary system
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Coding Guidance
N11 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail.
Inclusion Terms
  • chronic infectious interstitial nephritis
  • chronic pyelitis
  • chronic pyelonephritis
Excludes 2
From N00-N99
Use Additional Code
B95-B97
to identify infectious agent

More Specific Codes

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

External Resources

2025 ICD-10 guidelines from CMS.gov