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ICD-9-CM diagnosis code (retired)

839.12 — Open dislocation, second cervical vertebra

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 839.12

839.12 is an ICD-9-CM diagnosis code for open dislocation, second cervical vertebra. 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 S11.90XA (Unspecified open wound of unspecified part of neck, initial encounter) and S13.121A (Dislocation of C1/C2 cervical vertebrae, initial encounter). All of these are approximate matches, so review the record to pick the right one. Some mappings are combinations: more than one ICD-10 code is needed to fully express the ICD-9 code.

ICD-10-CM equivalents

Common questions about 839.12

What is the ICD-10 code for ICD-9 839.12?

The GEMs map 839.12 to ICD-10-CM S11.90XA and S13.121A.

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.