ICD-9-CM diagnosis code (retired)
331.7 — Cerebral degeneration 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 331.7
331.7 is an ICD-9-CM diagnosis code for cerebral degeneration 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, G94 (Other disorders of brain in diseases classified elsewhere). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- G94Other disorders of brain in diseases classified elsewhereapproximate
Common questions about 331.7
What is the ICD-10 code for ICD-9 331.7?
- The GEMs map 331.7 to ICD-10-CM G94.
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.