brain injury without open intracranial wound, with brief loss of consciousness (less than 1 hour)
brain injury without open intracranial wound, with brief loss of consciousness (less than 1 hour)
brain injury without open intracranial wound, with brief loss of consciousness (less than 1 hour) (diagnosis)
brain injury without open intracranial wound, with brief loss of consciousness (less than 1 hour) (diagnosis)