ICD-10-CM
ICD-10 code for AKI: N17.9
The CDC title for "AKI" is N17 (Acute kidney failure), a header that is not billable. When nothing more specific is documented, the billable code is N17.9, Acute kidney failure, unspecified.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under N17, then other CDC titles that name acute kidney failure
A header groups codes and is not billed. A billable code is one you can report.
- N17Acute kidney failureHeader
- N17.0Acute kidney failure with tubular necrosisBillable
- N17.1Acute kidney failure with acute cortical necrosisBillable
- N17.2Acute kidney failure with medullary necrosisBillable
- N17.8Other acute kidney failureBillable
- N17.9Acute kidney failure, unspecifiedBillable
- O90.4Postpartum acute kidney failureHeader
- O90.49Other postpartum acute kidney failureBillable
Code also
The CDC tabular list says a second code may be needed with this one. The note does not set which is listed first.
From N17. A note on a category applies to every code under it.
Code also associated underlying condition
Excludes1
Excludes1 means these codes are not reported together.
From N17. A note on a category applies to every code under it.
Excludes2
Excludes2 means the other condition can be reported with this one when both are documented.
Related conditions
Related pages
- N17.9 code detailsNotes, nearby codes, CMS-HCC group
- Category N17Every code under it
- Chapter 14Diseases of the genitourinary system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for AKI?
The CDC title for "AKI" is N17 (Acute kidney failure), a header that is not billable. When nothing more specific is documented, the billable code is N17.9, Acute kidney failure, unspecified.
Is N17.9 billable?
Yes. N17.9 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to N17.9?
The CDC tabular list gives 1 Excludes1 note (not coded together), 1 Excludes2 note (may be coded together when both are documented) for N17.9 and the categories above it. They are listed on this page.
What chapter is N17.9 in?
Chapter 14. Diseases of the genitourinary system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.