2026 ICD-10-CM Diagnosis Code N15Other renal tubulo-interstitial diseases

ICD-10-CM Codes›N00–N99›N10-N16›N15

ICD-10-CM N15
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N15 is a non-billable ICD-10-CM category code for other renal tubulo-interstitial diseases, so it cannot be submitted on claims. Use a more specific code from this category instead, such as N15.0, N15.1, N15.8, and N15.9.

Code Identity

ICD-10-CM Code
N15
Billable Status
No — Non-Billable Category
Code Describes
Other renal tubulo-interstitial diseases
Chapter
N10-N16
Renal tubulo-interstitial diseases

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN10-N16Renal tubulo-interstitial diseases
CategoryN15Other renal tubulo-interstitial diseases
This CodeN15Other renal tubulo-interstitial diseases

Specific Coding for Other renal tubulo-interstitial diseasesOverview

Non-specific codes like N15 require more characters. Use one of these billable codes instead:

  • Use N15.0 for Balkan nephropathy

  • Use N15.1 for Renal and perinephric abscess

  • Use N15.8 for Other specified renal tubulo-interstitial diseases

  • Use N15.9 for Renal tubulo-interstitial disease, unspecified

Patient EducationClinical

Kidney Diseases

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.

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Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About N15Overview

Is N15 (Other renal tubulo-interstitial diseases) a billable code?

No. This is a category header that groups the codes for other renal tubulo-interstitial diseases, and headers cannot be submitted on claims. Claims for other renal tubulo-interstitial diseases need a more specific code from this category, such as N15.0, N15.1, and N15.8.