N17.9 — Acute kidney failure, unspecified

N17.9

ICD-10 Chapter 14: Genitourinary System — illustrative image — Chapter 14: Diseases of the genitourinary system (N00–N99) — illustrative image

What this code means

Acute kidney failure (acute kidney injury, AKI) is a sudden fall in kidney function over hours to days; the type is not specified here.

Also called: acute kidney injury, aki, acute kidney failure, acute renal failure.

When this code is used

Used for acute kidney failure, unspecified.

Where it sits in ICD-10-CM

Code N17.9 belongs to Chapter 14: Diseases of the genitourinary system, which covers codes N00–N99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Learn more about this condition

Condition guide: Dialysis

Related symptoms

Related anatomy

Kidneys

Watch: related videos

▶ WatchAcute renal failure for nursing ▶ WatchAcute renal failure ▶ WatchAcute renal failure explained

Frequently asked questions

What is ICD-10-CM code N17.9?

N17.9 is the ICD-10-CM diagnosis code for “Acute kidney failure, unspecified”. Acute kidney failure (acute kidney injury, AKI) is a sudden fall in kidney function over hours to days; the type is not specified here.

When is code N17.9 used?

Used for acute kidney failure, unspecified. It belongs to Chapter 14 of ICD-10-CM (Diseases of the genitourinary system).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.