ICD-10-CM > S00-T88 > S00-S09 > S06 > S06.9 > S06.9X > S06.9X9 S06.9X9 Unspecified intracranial injury with loss of consciousness of unspecified duration Non-Billable/Non-Specific Codes S06.9X9A..., initial encounterS06.9X9D..., subsequent encounterS06.9X9S..., sequela