Is N18 a billable code?
No. N18 is a header code that groups 9 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
N18: Chronic kidney disease (CKD)
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
N18 groups related diagnoses under chronic kidney disease (ckd). It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under N18
- N18.1Chronic kidney disease, stage 1
- N18.2Chronic kidney disease, stage 2 (mild)
- 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
- N18.6End stage renal disease
- N18.9Chronic kidney disease, unspecified
N18 questions
What does N18 mean?
N18 is the ICD-10-CM code for Chronic kidney disease (CKD). It is in chapter 14, Diseases of the genitourinary system (N00-N99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.