Chronic kidney disease (CKD) ICD-10 code
The ICD-10-CM code for chronic kidney disease (ckd) is N18.9 — chronic kidney disease, unspecified. It is billable and valid for submission on a claim. There are 14 related codes, and which one you use depends on what the documentation supports.
Also written as ckd, renal failure chronic.
The mistake coders make here
Stage 3 was split: N18.30 unspecified, N18.31 stage 3a, N18.32 stage 3b. Coding N18.3 alone is no longer valid. If the patient is also diabetic, the diabetes gets a combination code (E11.22) AND you still code the N18 stage.
All ICD-10-CM codes for chronic kidney disease (ckd)
10 of 14 are billable. Green means you can submit it as-is.
| Code | Use it when |
|---|---|
| N18.9 | Chronic kidney disease, unspecified |
| N18.1 | Chronic kidney disease, stage 1 |
| N18.2 | Chronic kidney disease, stage 2 (mild) |
| N18.30 | Chronic kidney disease, stage 3 unspecified |
| N18.31 | Chronic kidney disease, stage 3a |
| N18.32 | Chronic kidney disease, stage 3b |
| N18.4 | Chronic kidney disease, stage 4 (severe) |
| N18.5 | Chronic kidney disease, stage 5 |
| N18.6 | End stage renal disease |
| N18 | Chronic kidney disease (CKD)not billable on its own |
| N18.3 | Chronic kidney disease, stage 3 (moderate)not billable on its own |
| I12 | Hypertensive chronic kidney diseasenot billable on its own |
| I13 | Hypertensive heart and chronic kidney diseasenot billable on its own |
| E13.22 | Other specified diabetes mellitus with diabetic chronic kidney disease |
Not sure which one? Let the documentation decide.
Answer a few questions about what the chart actually says and we’ll walk you to the code that follows from it.