ICD-10-CM > S00-T88 > S20-S29 > S24 > S24.1 > S24.13 > S24.139 S24.139 Anterior cord syndrome at unspecified level of thoracic spinal cord Non-Billable/Non-Specific Codes S24.139A..., initial encounterS24.139D..., subsequent encounterS24.139S..., sequela