N18.1: Chronic kidney disease, stage 1
N18.1 is the billable ICD-10-CM diagnosis code for Chronic kidney disease, stage 1. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code N18.1?
N18.1 is the ICD-10-CM diagnosis code for Chronic kidney disease, stage 1. It belongs to category N18 (Chronic kidney disease (CKD)).
Is N18.1 a billable code?
Yes. N18.1 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does N18.1 belong to?
N18.1 is part of ICD-10-CM category N18 — Chronic kidney disease (CKD), which has 18 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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