Coding and coverage · ICD-10-CM

N18 Chronic kidney disease (CKD)

Not billable (header)Chapter 14

Report one of the more specific codes below.

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Codes under this one

  • N18.1 Chronic kidney disease, stage 1
  • N18.2 Chronic kidney disease, stage 2 (mild)
  • N18.3 Chronic kidney disease, stage 3 (moderate)Header
  • N18.4 Chronic kidney disease, stage 4 (severe)
  • N18.5 Chronic kidney disease, stage 5
  • N18.6 End stage renal disease
  • N18.9 Chronic kidney disease, unspecified

Instructional notes

Chapter 14

Excludes2Not included here: the patient may have both; report both when both are present.
  • 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)

Section N17-N19

Excludes2Not included here: the patient may have both; report both when both are present.
  • 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)

This code

Code firstSequence the underlying condition first.
Use additional codeAdd a second code for the full picture.
  • code, if applicable, to identify:
  • associated cachexia (E88.A)
  • kidney transplant status (Z94.0)

Chapter 14: Diseases of the genitourinary system · N17-N19 Acute kidney failure and chronic kidney disease (N17-N19)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.