ICD-10-CM
ICD-10 code for Chronic kidney disease: N18.9
The CDC title for "Chronic kidney disease" is N18 (Chronic kidney disease (CKD)), a header that is not billable. When nothing more specific is documented, the billable code is N18.9, Chronic kidney disease, unspecified.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under N18, then other CDC titles that name chronic kidney disease
A header groups codes and is not billed. A billable code is one you can report.
- N18Chronic kidney disease (CKD)Header
- N18.1Chronic kidney disease, stage 1Billable
- N18.2Chronic kidney disease, stage 2 (mild)Billable
- N18.3Chronic kidney disease, stage 3 (moderate)Header
- N18.30Chronic kidney disease, stage 3 unspecifiedBillable
- N18.31Chronic kidney disease, stage 3aBillable
- N18.32Chronic kidney disease, stage 3bBillable
- N18.4Chronic kidney disease, stage 4 (severe)Billable
- N18.5Chronic kidney disease, stage 5Billable
- N18.6End stage renal diseaseBillable
- N18.9Chronic kidney disease, unspecifiedBillable
- D63.1Anemia in chronic kidney diseaseBillable
- E08.22Diabetes mellitus due to underlying condition with diabetic chronic kidney diseaseBillable
- E09.22Drug or chemical induced diabetes mellitus with diabetic chronic kidney diseaseBillable
- E10.22Type 1 diabetes mellitus with diabetic chronic kidney diseaseBillable
- E11.22Type 2 diabetes mellitus with diabetic chronic kidney diseaseBillable
- E13.22Other specified diabetes mellitus with diabetic chronic kidney diseaseBillable
- I12Hypertensive chronic kidney diseaseHeader
- I12.0Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal diseaseBillable
- I12.9Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney diseaseBillable
- I13Hypertensive heart and chronic kidney diseaseHeader
- I13.0Hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney diseaseBillable
- I13.1Hypertensive heart and chronic kidney disease without heart failureHeader
- I13.10Hypertensive heart and chronic kidney disease without heart failure, with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney diseaseBillable
- I13.11Hypertensive heart and chronic kidney disease without heart failure, with stage 5 chronic kidney disease, or end stage renal diseaseBillable
- I13.2Hypertensive heart and chronic kidney disease with heart failure and with stage 5 chronic kidney disease, or end stage renal diseaseBillable
- O10.2Pre-existing hypertensive chronic kidney disease complicating pregnancy, childbirth and the puerperiumHeader
- O10.21Pre-existing hypertensive chronic kidney disease complicating pregnancyHeader
- O10.211Pre-existing hypertensive chronic kidney disease complicating pregnancy, first trimesterBillable
- O10.212Pre-existing hypertensive chronic kidney disease complicating pregnancy, second trimesterBillable
- O10.213Pre-existing hypertensive chronic kidney disease complicating pregnancy, third trimesterBillable
- O10.219Pre-existing hypertensive chronic kidney disease complicating pregnancy, unspecified trimesterBillable
- O10.22Pre-existing hypertensive chronic kidney disease complicating childbirthBillable
- O10.23Pre-existing hypertensive chronic kidney disease complicating the puerperiumBillable
- O10.3Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, childbirth and the puerperiumHeader
- O10.31Pre-existing hypertensive heart and chronic kidney disease complicating pregnancyHeader
- O10.311Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, first trimesterBillable
- O10.312Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, second trimesterBillable
- O10.313Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, third trimesterBillable
- O10.319Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, unspecified trimesterBillable
- O10.32Pre-existing hypertensive heart and chronic kidney disease complicating childbirthBillable
- O10.33Pre-existing hypertensive heart and chronic kidney disease complicating the puerperiumBillable
Code first
The CDC tabular list says to report the code named here before this one.
From N18. A note on a category applies to every code under it.
Use additional code
The CDC tabular list says to add the code named here after this one when it applies.
From N18. A note on a category applies to every code under it.
Use additional code, if applicable, to identify:
Related conditions
Related pages
- N18.9 code detailsNotes, nearby codes, CMS-HCC group
- Category N18Every code under it
- Chapter 14Diseases of the genitourinary system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Chronic kidney disease?
The CDC title for "Chronic kidney disease" is N18 (Chronic kidney disease (CKD)), a header that is not billable. When nothing more specific is documented, the billable code is N18.9, Chronic kidney disease, unspecified.
Is N18.9 billable?
Yes. N18.9 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to N18.9?
The CDC tabular list gives 3 "use additional code" notes for N18.9 and the categories above it. They are listed on this page.
What chapter is N18.9 in?
Chapter 14. Diseases of the genitourinary system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.