Alphabetic Index FY2027

N19

Unspecified kidney failure

FY2027Chapter 14: Diseases of the genitourinary system/N17–N19 Acute kidney failure and chronic kidney disease

BillableComplete code, valid to report
Care settingsIPF Comorbidity · Renal Failure, Chronic

N19 is a billable ICD-10-CM diagnosis code for unspecified kidney failure. It is part of the FY2027 code set, effective October 1, 2026. The Alphabetic Index lists it under 6 entries. Its coding notes include 7 Excludes1 entries and 19 Excludes2 entries.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

This code
  • acute kidney failure (N17.-)
  • chronic kidney disease (N18.-)
  • chronic uremia (N18.9)
  • extrarenal uremia (R39.2)
  • prerenal uremia (R39.2)
  • renal insufficiency (acute) (N28.9)
  • uremia of newborn (P96.0)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (19 notes)
Inherited from N17–N19 Acute kidney failure and chronic kidney disease
  • congenital renal failure (P96.0)
  • drug- and heavy-metal-induced tubulo-interstitial and tubular conditions (N14.-)
  • extrarenal uremia (R39.2)
  • hemolytic-uremic syndrome (D59.3-)
  • hepatorenal syndrome (K76.7)
  • postpartum hepatorenal syndrome (O90.41)
  • posttraumatic renal failure (T79.5)
  • prerenal uremia (R39.2)
  • renal failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.4)
  • renal failure following labor and delivery (O90.41)
  • renal failure postprocedural (N99.0)
Inherited from Chapter 14 Diseases of the genitourinary system
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Care settings

How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.

IPF Comorbidity

On the CMS IPF comorbidity list.

Comorbidity categoryFactor
Renal Failure, Chronic1.08
It counts as a comorbidity when reported as a secondary diagnosis and actively treated during the stay. An IPF receives only one adjustment within a category and can receive adjustments in more than one category.

Source: CMS IPF PPS FY 2027 final rule (CMS-1847-F), Addendum B-3 (comorbidity codes with adjustment factor); effective for discharges on or after October 1, 2026

Inclusion terms

Conditions classified to this code.

This code
  • Uremia NOS

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 6 entries