ICD-10-CM > S00-T88 > S00-S09 > S06 > S06.9 > S06.9X > S06.9X4 S06.9X4 Unspecified intracranial injury with loss of consciousness of 6 hours to 24 hours Non-Billable/Non-Specific Codes S06.9X4A..., initial encounterS06.9X4D..., subsequent encounterS06.9X4S..., sequela