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ICD-9-CM diagnosis code (retired)

955.2 — Injury to ulnar nerve

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 955.2

955.2 is an ICD-9-CM diagnosis code for injury to ulnar nerve. 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 3 ICD-10-CM codes, such as S44.00XA (Injury of ulnar nerve at upper arm level, unspecified arm, initial encounter), S54.00XA (Injury of ulnar nerve at forearm level, unspecified arm, initial encounter) and S64.00XA (Injury of ulnar nerve at wrist and hand level of unspecified arm, initial encounter). All of these are approximate matches, so review the record to pick the right one.

ICD-10-CM equivalents

Common questions about 955.2

What is the ICD-10 code for ICD-9 955.2?

The GEMs map 955.2 to ICD-10-CM S44.00XA, S54.00XA and S64.00XA.

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.