N16.4 ICD-10-CA code: Renal tubulo-interstitial disorders in systemic connective tissue disorders
N16.4 is the ICD-10-CA code for “Renal tubulo-interstitial disorders in systemic connective tissue disorders” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
N16.4Renal tubulo-interstitial disorders in systemic connective tissue disorders
Short description: Ren tubulointerst disrd conn tis dis
ICD-10-CA · Canada · Also written N164
Notes for N16.4
As CIHI prints them, with any note N16.4 takes from the headings above it.
Includes
- Renal tubulo-interstitial disorders in:• sicca syndrome [Sjögren] (M35.0†)• systemic lupus erythematosus (M32.1†)
- 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.
- 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 N16.4 sits
- 1ChapterChapter 14: Diseases of the genitourinary system (N00-N99)
- 2Block N10-N16Renal tubulo-interstitial diseases
- 3Category N16Renal tubulo-interstitial disorders in diseases classified elsewhere
- 4Valid code N16.4Renal tubulo-interstitial disorders in systemic connective tissue disorders
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 N16.4 mean?
N16.4 is the ICD-10-CA code for “Renal tubulo-interstitial disorders in systemic connective tissue disorders” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is N16.4 in ICD-10-CA?
N16.4 sits under N16 Renal tubulo-interstitial disorders in diseases classified elsewhere, within N10-N16 Renal tubulo-interstitial diseases, within Chapter 14: Diseases of the genitourinary system (N00-N99).
What coding notes apply to N16.4?
ICD-10-CA lists Includes, Use additional code, Excludes notes for N16.4, 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 N16.4
View N16N16.0Renal tubulo-interstitial disorders in infectious and parasitic diseases classified elsewhereN16.1Renal tubulo-interstitial disorders in neoplastic diseasesN16.2Renal tubulo-interstitial disorders in blood diseases and disorders involving the immune mechanismN16.3Renal tubulo-interstitial disorders in metabolic diseasesN16.5Renal tubulo-interstitial disorders in transplant rejectionN16.8Renal tubulo-interstitial disorders in other diseases classified elsewhere