831.12 — Open posterior dislocation of humerus

831.12 is an ICD-9-CM diagnosis code for open posterior dislocation of humerus. 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 S41.109A (Unspecified open wound of unspecified upper arm, initial encounter) and S43.026A (Posterior dislocation of unspecified humerus, 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.