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ICD-9-CM diagnosis code (retired)

823.31 — Open fracture of shaft of fibula alone

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 823.31

823.31 is an ICD-9-CM diagnosis code for open fracture of shaft of fibula alone. 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 S82.409B (Unspecified fracture of shaft of unspecified fibula, initial encounter for open fracture type I or II) and S82.409C (Unspecified fracture of shaft of unspecified fibula, initial encounter for open fracture type IIIA, IIIB, or IIIC). All of these are approximate matches, so review the record to pick the right one.

ICD-10-CM equivalents

Common questions about 823.31

What is the ICD-10 code for ICD-9 823.31?

The GEMs map 823.31 to ICD-10-CM S82.409B and S82.409C.

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.