803.99 — Other open skull fracture with intracranial injury of other and unspecified nature, with concussion, unspecified

803.99 is an ICD-9-CM diagnosis code for other open skull fracture with intracranial injury of other and unspecified nature, with concussion, unspecified. 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 S02.91XB (Unspecified fracture of skull, initial encounter for open fracture), S06.890A (Other specified intracranial injury without loss of consciousness, initial encounter) and S06.9X0A (Unspecified intracranial injury without loss of consciousness, 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.