ICD-10-CM > S00-T88 > S00-S09 > S06 > S06.8 > S06.81 > S06.819 S06.819 Injury of right internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness of unspecified duration Non-Billable/Non-Specific Codes S06.819A..., initial encounterS06.819D..., subsequent encounterS06.819S..., sequela