ICD-10-CM > S00-T88 > S20-S29 > S24 > S24.1 > S24.13 > S24.131 S24.131 Anterior cord syndrome at T1 level of thoracic spinal cord Non-Billable/Non-Specific Codes S24.131A..., initial encounterS24.131D..., subsequent encounterS24.131S..., sequela