ICD-10-CM · Chapter 14 · N00–N99
N18
Chronic kidney disease (CKD)
Diseases of the genitourinary system
Heads up:this is a parent code. It's typically not directly billable — you need to drill down to a more specific child code (one with additional digits) to use on a claim.
Quick facts
- Code
- N18
- Type
- Category / header (non-billable)
- ICD-10-CM chapter
- Chapter 14 — Diseases of the genitourinary system
- Category
- N18
- Specificity
- 3 characters
How coders use this code
ICD-10-CM N18 is a category (header) for chronic kidney disease (ckd). It is generally not reported directly on a claim — coders drill down to a more specific child code (one with additional characters) that matches the documentation. Use the related codes below to find the billable code that fits, and verify against the annual NCHS/CMS guidelines.
Related codes in N18
- N18.1Chronic kidney disease, stage 1
- N18.2Chronic kidney disease, stage 2 (mild)
- N18.3Chronic kidney disease, stage 3 (moderate)
- 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
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