ICD-10-CM > S00-T88 > S00-S09 > S06 > S06.8 > S06.82 > S06.829 S06.829 Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of unspecified duration Non-Billable/Non-Specific Codes S06.829A..., initial encounterS06.829D..., subsequent encounterS06.829S..., sequela