N15.9 ICD-10-CA code: Renal tubulo-interstitial disease, unspecified
N15.9 is the ICD-10-CA code for “Renal tubulo-interstitial disease, unspecified” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
N15.9Renal tubulo-interstitial disease, unspecified
Short description: Renal tubulointerstitial disease NOS
ICD-10-CA · Canada · Also written N159
Index terms
Entries in CIHI’s alphabetical index that lead to N15.9. Searching the index by the condition the note names is how coders reach this code.
- Perinephritis
- Disease, diseased, tubulo interstitial
- Infection, infected (opportunistic), renal
- Infection, infected (opportunistic), perirenal
- Infection, infected (opportunistic), kidney (cortex) (hematogenous)
Notes for N15.9
As CIHI prints them, with any note N15.9 takes from the headings above it.
Includes
- Infection of kidney NOS
- PyelonephritisFrom N10-N16 Renal tubulo-interstitial diseases
Use additional code
Add a code for this detail when the note documents it.
- Use additional code to identify associated chronic kidney disease (N18.-)From N10-N16 Renal tubulo-interstitial diseases
Excludes
Conditions classified elsewhere.
- Urinary tract infection NOS (N39.0)
- Pyeloureteritis cystica (N28.84)From N10-N16 Renal tubulo-interstitial diseases
- Certain conditions originating in the perinatal period (P00-P96)certain infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 14: Diseases of the genitourinary system (N00-N99)
Where N15.9 sits
- 1ChapterChapter 14: Diseases of the genitourinary system (N00-N99)
- 2Block N10-N16Renal tubulo-interstitial diseases
- 3Category N15Other renal tubulo-interstitial diseases
- 4Valid code N15.9Renal tubulo-interstitial disease, unspecified
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code N15.9 mean?
N15.9 is the ICD-10-CA code for “Renal tubulo-interstitial disease, unspecified” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is N15.9 in ICD-10-CA?
N15.9 sits under N15 Other renal tubulo-interstitial diseases, within N10-N16 Renal tubulo-interstitial diseases, within Chapter 14: Diseases of the genitourinary system (N00-N99).
What coding notes apply to N15.9?
ICD-10-CA lists Includes, Excludes, Use additional code notes for N15.9, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.