ICD-9-CM diagnosis code (retired)
585.1 — Chronic kidney disease, Stage I
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 585.1
585.1 is an ICD-9-CM diagnosis code for chronic kidney disease, Stage I. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to one ICD-10-CM code, N18.1 (Chronic kidney disease, stage 1). The match is exact.
ICD-10-CM equivalents
- N18.1Chronic kidney disease, stage 1exact match
Common questions about 585.1
What is the ICD-10 code for ICD-9 585.1?
- The GEMs map 585.1 to ICD-10-CM N18.1.
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.