ICD-9-CM diagnosis code (retired)
590.81 — Pyelitis or pyelonephritis in diseases classified elsewhere
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 590.81
590.81 is an ICD-9-CM diagnosis code for Pyelitis or pyelonephritis in diseases classified elsewhere. 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, N16 (Renal tubulo-interstitial disorders in diseases classified elsewhere). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- N16Renal tubulo-interstitial disorders in diseases classified elsewhereapproximate
Common questions about 590.81
What is the ICD-10 code for ICD-9 590.81?
- The GEMs map 590.81 to ICD-10-CM N16.
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.