ICD-10-CM > S00-T88 > S10-S19 > S15 > S15.1 > S15.19 > S15.199 S15.199 Other specified injury of unspecified vertebral artery Non-Billable/Non-Specific Codes S15.199A..., initial encounterS15.199D..., subsequent encounterS15.199S..., sequela