ICD-9-CM diagnosis code (retired)
951.8 — Injury to other specified cranial nerves
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 951.8
951.8 is an ICD-9-CM diagnosis code for injury to other specified cranial nerves. 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 2 ICD-10-CM codes, such as S04.819A (Injury of olfactory [1st ] nerve, unspecified side, initial encounter) and S04.899A (Injury of other cranial nerves, unspecified side, initial encounter). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
Common questions about 951.8
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.