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List of Diseases and Injuries

Acute kidney failure and chronic kidney disease (N17-N19)


Excludes 2: 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)

N17Acute kidney failure
Code Also: associated underlying condition
Excludes 1: posttraumatic renal failure (T79.5)

N17.0Acute kidney failure with tubular necrosis
› Acute tubular necrosis
› Renal tubular necrosis
› Tubular necrosis NOS

N17.1Acute kidney failure with acute cortical necrosis
› Acute cortical necrosis
› Cortical necrosis NOS
› Renal cortical necrosis

N17.2Acute kidney failure with medullary necrosis
› Medullary [papillary] necrosis NOS
› Acute medullary [papillary] necrosis
› Renal medullary [papillary] necrosis

N17.8Other acute kidney failure

N17.9Acute kidney failure, unspecified
› Acute kidney injury (nontraumatic)
Excludes 2: traumatic kidney injury (S37.0-)

N18Chronic kidney disease (CKD)
Code First: any associated:
› diabetic chronic kidney disease (E08.22, E09.22, E10.22, E11.22, E13.22)
› hypertensive chronic kidney disease (I12.-, I13.-)
Use Additional Code: code to identify kidney transplant status, if applicable, (Z94.0)

N18.1Chronic kidney disease, stage 1

N18.2Chronic kidney disease, stage 2 (mild)

N18.3Chronic kidney disease, stage 3 (moderate)

N18.30Chronic kidney disease, stage 3 unspecified

N18.31Chronic kidney disease, stage 3a

N18.32Chronic kidney disease, stage 3b

N18.4Chronic kidney disease, stage 4 (severe)

N18.5Chronic kidney disease, stage 5
Excludes 1: chronic kidney disease, stage 5 requiring chronic dialysis (N18.6)

N18.6End stage renal disease
› Chronic kidney disease requiring chronic dialysis
Use Additional Code: code to identify dialysis status (Z99.2)

N18.9Chronic kidney disease, unspecified
› Chronic renal disease
› Chronic renal failure NOS
› Chronic renal insufficiency
› Chronic uremia NOS
› Diffuse sclerosing glomerulonephritis NOS

N19Unspecified kidney failure
› Uremia NOS
Excludes 1: 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)