Category N18

Chronic kidney disease (CKD)

Clinical Classification Guidelines

Code First

  • any associated:
  • diabetic chronic kidney disease (E08.22, E09.22, E10.22, E11.22, E13.22)
  • hypertensive chronic kidney disease (I12.-, I13.-)

Specific Diagnosis Codes

Chronic kidney disease, stage 1
N18.1
Chronic kidney disease, stage 2 (mild)
N18.2
Chronic kidney disease, stage 3 (moderate)
N18.3
Chronic kidney disease, stage 3 unspecified
N18.30
Chronic kidney disease, stage 3a
N18.31
Chronic kidney disease, stage 3b
N18.32
Chronic kidney disease, stage 4 (severe)
N18.4
Chronic kidney disease, stage 5
N18.5
End stage renal disease
N18.6
Chronic kidney disease, unspecified
N18.9