N11 ICD-10-CA category: Chronic tubulo-interstitial nephritis
N11 isn’t a code on its own. Choose one of the 4 codes beneath it, the one the documentation supports.
Official description
N11Chronic tubulo-interstitial nephritis
ICD-10-CA · Canada
Codes in N11
N11 isn’t a code on its own. Open the code that matches what the note documents.
Notes for N11
As CIHI prints them, with any note N11 takes from the headings above it.
Includes
- Chronic:• infectious interstitial nephritis• pyelitis• pyelonephritis
- PyelonephritisFrom N10-N16 Renal tubulo-interstitial diseases
Use additional code
Add a code for this detail when the note documents it.
- Use additional code (B95-B97) to identify infectious agent.
- Use additional code to identify associated chronic kidney disease (N18.-)From N10-N16 Renal tubulo-interstitial diseases
Excludes
Conditions classified elsewhere.
- 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 N11 sits
- 1ChapterChapter 14: Diseases of the genitourinary system (N00-N99)
- 2Block N10-N16Renal tubulo-interstitial diseases
- 3Category N11Chronic tubulo-interstitial nephritis
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
Is N11 a valid ICD-10-CA code?
No. N11 (Chronic tubulo-interstitial nephritis) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 4 codes; record the one the documentation supports.
Where is N11 in ICD-10-CA?
N11 sits under N10-N16 Renal tubulo-interstitial diseases, within Chapter 14: Diseases of the genitourinary system (N00-N99).
What coding notes apply to N11?
ICD-10-CA lists Includes, Use additional code, Excludes notes for N11, 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.
Codes beside N11
View N10-N16N10Acute tubulo-interstitial nephritisN12Tubulo-interstitial nephritis, not specified as acute or chronicN13Obstructive and reflux uropathyN14Drug- and heavy-metal-induced tubulo-interstitial and tubular conditionsN15Other renal tubulo-interstitial diseasesN16Renal tubulo-interstitial disorders in diseases classified elsewhere