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ICD-10-CM 2027 diagnosis code

N17Acute kidney failure

Not billable — use a more specific code

N17 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About N17

N17 is the ICD-10-CM diagnosis code for acute kidney failure. It belongs to block N17-N19 (acute kidney failure and chronic kidney disease) and chapter 14 (diseases of the genitourinary system). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: N17.0 (with tubular necrosis), N17.1 (with acute cortical necrosis), N17.2 (with medullary necrosis), N17.8 (failure) and N17.9 (unspecified).

Don't report N17 together with the conditions in its Excludes1 note: posttraumatic renal failure (T79.5).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under N17

Coding notes

Excludes1Not coded here — never report together with this code
  • posttraumatic renal failure (T79.5)
Code alsoTwo codes may be needed; sequencing depends on circumstances
  • associated underlying condition

Notes that apply from higher levels

Instructions written at a parent level also apply to N17.

Broader instructions also apply from N17-N19 Acute kidney failure and chronic kidney disease and Chapter 14: Diseases of the genitourinary system.

Codes whose notes reference N17

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about N17

Is N17 billable?

No. N17 is a header code. Report one of its more specific subcodes instead.