ICD-10-CM > S00-T88 > S00-S09 > S06 > S06.8 > S06.82 > S06.822 S06.822 Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of 31 minutes to 59 minutes Non-Billable/Non-Specific Codes S06.822A..., initial encounterS06.822D..., subsequent encounterS06.822S..., sequela