N17.9 — Acute kidney failure, unspecified
N17.9 is a billable, specific ICD-10-CM code for acute kidney failure, unspecified. It is valid for submission on a claim.
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
- traumatic kidney injury (S37.0-)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Acute kidney injury (nontraumatic)
Risk adjustment
N17.9 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
N17.9 is named in 24 Medicare coverage policies — 14 listing it as supporting medical necessity, and 10 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A58019Billing and Coding: MolDX: Molecular Testing for Solid Organ Allograft Rejectionnot covered
- A58061Billing and Coding: MolDX: Molecular Testing for Solid Organ Allograft Rejectionnot covered
- A58168Billing and Coding: MolDX: Molecular Testing for Solid Organ Allograft Rejectionnot covered
- A58170Billing and Coding: MolDX: Molecular Testing for Solid Organ Allograft Rejectionnot covered
How N17.9 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to N17.9.
- Failure, failed›renal›acute
- Injury›kidney›acute(nontraumatic)
- Necrosis, necrotic›kidney›acute
Related codes at this level
Codes that share N17. If N17.9 is not quite right, the correct code is usually one of these.
Questions about N17.9
- Is N17.9 a billable ICD-10-CM code?
- Yes. N17.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does N17.9 sit in the tabular list?
- Diseases of the genitourinary system (N00-N99), in the block Acute kidney failure and chronic kidney disease (N17-N19).