ICD-9-CM diagnosis code (retired)
590.00 — Chronic pyelonephritis without lesion of renal medullary necrosis
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 590.00
590.00 is an ICD-9-CM diagnosis code for chronic pyelonephritis without lesion of renal medullary necrosis. 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, N11.0 (Nonobstructive reflux-associated chronic pyelonephritis). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- N11.0Nonobstructive reflux-associated chronic pyelonephritisapproximate
Common questions about 590.00
What is the ICD-10 code for ICD-9 590.00?
- The GEMs map 590.00 to ICD-10-CM N11.0.
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.