N17.9 ICD-10-CA code: Acute renal failure, unspecified
N17.9 is the ICD-10-CA code for “Acute renal failure, unspecified” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
N17.9Acute renal failure, unspecified
Short description: Acute renal failure unspecified
ICD-10-CA · Canada · Also written N179
Index terms
Entries in CIHI’s alphabetical index that lead to N17.9. Searching the index by the condition the note names is how coders reach this code.
- Failure, failed, renal, acute
- Failure, failed, renal, acute, with, diabetes mellitus
- Necrosis, necrotic (ischemic), kidney (bilateral), acute
- Necrosis, necrotic (ischemic), kidney (bilateral), acute, with (in) diabetes mellitus
Notes for N17.9
As CIHI prints them, with any note N17.9 takes from the headings above it.
Includes
- Acute kidney injury (AKI) (nontraumatic)acute renal impairmentFrom N17 Acute renal failure
Use additional code
Add a code for this detail when the note documents it.
- Use additional code from category (E10-E14) with fourth and fifth characters .28 to classify any associated diabetes mellitus.
- Use additional external cause code (Chapter XX) to identify external agent.From N17-N19 Renal failure
Excludes
Conditions classified elsewhere.
- Congenital renal failure (P96.0)drug- and heavy-metal-induced tubulo-interstitial and tubular conditions (N14.-)extrarenal uraemia (R39.2)haemolytic-uraemic syndrome (D59.3)hepatorenal syndrome (K76.7):• postpartum (O90.4)prerenal uraemia (R39.2)renal failure:• complicating abortion or ectopic or molar pregnancy (O00-O07)(O08.4)• following labour and delivery (O90.4-)• postprocedural (N99.0)From N17-N19 Renal failure
- 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 N17.9 sits
- 1ChapterChapter 14: Diseases of the genitourinary system (N00-N99)
- 2Block N17-N19Renal failure
- 3Category N17Acute renal failure
- 4Valid code N17.9Acute renal failure, 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 N17.9 mean?
N17.9 is the ICD-10-CA code for “Acute renal failure, unspecified” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is N17.9 in ICD-10-CA?
N17.9 sits under N17 Acute renal failure, within N17-N19 Renal failure, within Chapter 14: Diseases of the genitourinary system (N00-N99).
What coding notes apply to N17.9?
ICD-10-CA lists Use additional code, Includes, Excludes notes for N17.9, 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.