ICD-9-CM diagnosis code (retired)
803.42 — Other closed skull fracture with intracranial injury of other and unspecified nature, with brief [less than one hour] loss of consciousness
About ICD-9-CM 803.42
803.42 is an ICD-9-CM diagnosis code for other closed skull fracture with intracranial injury of other and unspecified nature, with brief [less than one hour] loss of consciousness. 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 5 ICD-10-CM codes, such as S02.91XA (Unspecified fracture of skull, initial encounter for closed fracture), S06.891A (Other specified intracranial injury with loss of consciousness of 30 minutes or less, initial encounter) and S06.892A (Other specified intracranial injury with loss of consciousness of 31 minutes to 59 minutes, 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
- S02.91XAUnspecified fracture of skull, initial encounter for closed fractureapproximate · combination (scenario 1, choice 1)
- S06.891AOther specified intracranial injury with loss of consciousness of 30 minutes or less, initial encounterapproximate · combination (scenario 1, choice 2)
- S06.892AOther specified intracranial injury with loss of consciousness of 31 minutes to 59 minutes, initial encounterapproximate · combination (scenario 1, choice 2)
- S06.9X1AUnspecified intracranial injury with loss of consciousness of 30 minutes or less, initial encounterapproximate · combination (scenario 1, choice 2)
- S06.9X2AUnspecified intracranial injury with loss of consciousness of 31 minutes to 59 minutes, initial encounterapproximate · combination (scenario 1, choice 2)
Common questions about 803.42
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.