ICD-10-CM · Chapter 14 · N00-N99
N18 Chronic kidney disease (CKD)
Use Additional Code
- code, if applicable, to identify:
- associated cachexia (E88.A)
- kidney transplant status (Z94.0)
Code First
- any associated:
- diabetic chronic kidney disease (E08.22, E09.22, E10.22, E11.22, E13.22)
- hypertensive chronic kidney disease (I12.-, I13.-)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| N18..1 | Chronic kidney disease, stage 1 | Yes |
| N18..2 | Chronic kidney disease, stage 2 (mild) | Yes |
| N18..3 | Chronic kidney disease, stage 3 (moderate) | No |
| N18..30 | Chronic kidney disease, stage 3 unspecified | Yes |
| N18..31 | Chronic kidney disease, stage 3a | Yes |
| N18..32 | Chronic kidney disease, stage 3b | Yes |
| N18..4 | Chronic kidney disease, stage 4 (severe) | Yes |
| N18..5 | Chronic kidney disease, stage 5 | Yes |
| N18..6 | End stage renal disease | Yes |
| N18..9 | Chronic kidney disease, unspecified | Yes |
Plain-language term for this code
The following entry in the US Medical Glossary corresponds to ICD-10-CM category N18:
- Chronic Kidney Disease — Enfermedad renal crónica
Last reviewed: September 2026