2006 ICD-9-CM Volume 1 Diagnosis Codes > Injury And Poisoning 800-999 > Intracranial Injury, Excluding Those With Skull Fracture 850-854 > 850 Concussion 851 Cerebral laceration and contusion 852 Subarachnoid subdural and extradural hemorrhage following injury 853 Other and unspecified intracranial hemorrhage following injury 854 Intracranial injury of other and unspecified nature