ICD-10-CM > S00-T88 > S20-S29 > S24 > S24.1 > S24.14 > S24.149 S24.149 Brown-Séquard syndrome at unspecified level of thoracic spinal cord Non-Billable/Non-Specific Codes S24.149A..., initial encounterS24.149D..., subsequent encounterS24.149S..., sequela