2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Other renal tubulo-interstitial diseases
Same as the full description in the CMS dataset.
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to N15: its own notes plus those printed at block N10-N16 and Chapter 14. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Block N10-N16 Renal tubulo-interstitial diseases applies to 35 codes
  • pyelonephritis

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block N10-N16 Renal tubulo-interstitial diseases applies to 35 codes
  • pyeloureteritis cystica (N28.85)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 14 (N00-N99) Diseases of the genitourinary system applies to 838 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

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.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About N15Overview

What is the ICD-10 code for other renal tubulo-interstitial diseases?

N15 is the ICD-10-CM category for other renal tubulo-interstitial diseases, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.

Can N15 be reported with N28.85?

Not as a rule. The Excludes1 note at block N10-N16, which applies to N15, lists "pyeloureteritis cystica (N28.85)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).