MCMedicalCodingSoftware
N17.1

N17.1: Acute kidney failure with acute cortical necrosis

Billable / specific codeICD-10-CM

N17.1 is a billable, specific ICD-10-CM code for acute kidney failure with acute cortical necrosis. It is valid for submission on a claim.

Check N17.1 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Acute cortical necrosis
  • Cortical necrosis NOS
  • Renal cortical necrosis

Excludes1 inherited from the categories above N17.1

A category’s note binds every code beneath it.

Written on N17: Acute kidney failure

  • posttraumatic renal failure (T79.5)

Other codes that can never be billed with N17.1

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • N19Unspecified kidney failure

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

N17.1 is named in 22 Medicare coverage policies: 12 listing it as supporting medical necessity, and 10 listing it as NOT covered. Which one applies depends on your Medicare contractor.

  • A60145Billing and Coding: MolDX: Molecular Testing for Solid Organ Allograft Rejectionnot covered
  • A60146Billing and Coding: MolDX: Molecular Testing for Solid Organ Allograft Rejectionnot covered
  • A60151Billing and Coding: MolDX: Molecular Testing for Solid Organ Allograft Rejectionnot covered
  • A60152Billing and Coding: MolDX: Molecular Testing for Solid Organ Allograft Rejectionnot covered

Alphabetic index entries that lead here

  • Necrosis, necrotic›cortical(acute) (renal)
  • Necrosis, necrotic›kidney›cortical(acute) (bilateral)
  • Failure, failed›renal›acute›with›cortical necrosis

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under N17

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.