DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

N17 Acute kidney failure

  • Header · not billable

N17 is not billable. The category heads 5 billable codes in FY2027: the 5 codes directly below it.

Index → code

  • Shockkidney → N17.0
  • Nephropathyvasomotor → N17.0
  • Nephropathyphenacetin → N17.2

Where it sits

  1. Chapter 14 Diseases of the genitourinary system (N00-N99)
  2. N17-N19 Acute kidney failure and chronic kidney disease (N17-N19)
  3. N17 Acute kidney failure
Billable codes
5
Subdivisions
5
CC / MCC codes
2 / 3
HCC V28 codes
0
New FY2027
0
Index entries
26

Codes in N17

  1. N17.0
    Acute kidney failure with tubular necrosis
    BillableMCC
    Inclusion terms 3

    Inclusion terms

    • Acute tubular necrosis
    • Renal tubular necrosis
    • Tubular necrosis NOS
  2. N17.1
    Acute kidney failure with acute cortical necrosis
    BillableMCC
    Inclusion terms 3

    Inclusion terms

    • Acute cortical necrosis
    • Cortical necrosis NOS
    • Renal cortical necrosis
  3. N17.2
    Acute kidney failure with medullary necrosis
    BillableMCC
    Inclusion terms 3

    Inclusion terms

    • Medullary [papillary] necrosis NOS
    • Acute medullary [papillary] necrosis
    • Renal medullary [papillary] necrosis
  4. N17.8
    Other acute kidney failure
    BillableCC
  5. N17.9
    Acute kidney failure, unspecified
    BillableCC
    Inclusion terms 1, Excludes2 1

    Inclusion terms

    • Acute kidney injury (nontraumatic)

    Excludes2

    • traumatic kidney injury (S37.0-) S37.0

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At N17

Excludes1

  • posttraumatic renal failure (T79.5) T79.5

Code also

  • associated underlying condition

Notes that also apply

Block N17-N19 instructions (Excludes2 11): printed on the block page.

Chapter 14 instructions (Excludes2 8): printed on the chapter 14 page.

Index entries

  • Necrosis, necrotic (ischemic)tubular (acute) (anoxic) (renal) (toxic) → N17.0
  • Nephropathyvasomotor → N17.0
  • Nephrosis, nephrotic (Epstein's) (syndrome) (congenital)tubular (acute) → N17.0
  • Shockkidney → N17.0
  • Necrosis, necrotic (ischemic)cortical (acute) (renal) → N17.1
  • Necrosis, necrotic (ischemic)medullary (acute) (renal) → N17.2
  • Necrosis, necrotic (ischemic)papillary (acute) (renal) → N17.2
  • Nephropathyphenacetin → N17.2
  • Papillitisnecrotizing, kidney → N17.2
  • Papillitisrenal, necrotizing → N17.2
  • Necrosis, necrotic (ischemic)kidney (bilateral)tubular → N17.0
  • Stasisrenaltubular → N17.0
  • Syndromeshock (traumatic)kidney → N17.0
  • Necrosis, necrotic (ischemic)kidney (bilateral)cortical (acute) (bilateral) → N17.1
  • Necrosis, necrotic (ischemic)kidney (bilateral)medullary (bilateral) (in acute renal failure) (papillary) → N17.2
  • Necrosis, necrotic (ischemic)kidney (bilateral)papillary (bilateral) (in acute renal failure) → N17.2
  • Nephropathyanalgesicwith medullary necrosis, acute → N17.2
  • Failure, failedkidneyacute → N17.9-
  • Failure, failedrenalacute → N17.9
  • Injurykidneyacute (nontraumatic) → N17.9
  • Necrosis, necrotic (ischemic)kidney (bilateral)acute → N17.9
  • Failure, failedrenalwithtubular necrosis (acute) → N17.0
  • Failure, failedrenalacutespecified NEC → N17.8
  • Failure, failedrenalacutewithtubular necrosis → N17.0
  • Failure, failedrenalacutewithcortical necrosis → N17.1
  • Failure, failedrenalacutewithmedullary necrosis → N17.2

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy