ICD-10-CM > S00-T88 > S00-S09 > S06 > S06.8 > S06.81 > S06.812 S06.812 Injury of right internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 31 minutes to 59 minutes Non-Billable/Non-Specific Codes S06.812A..., initial encounterS06.812D..., subsequent encounterS06.812S..., sequela