ICD-10-CM > M00-M99 > M50-M54 > M51 > M51.8 M51.8 Other thoracic, thoracolumbar and lumbosacral intervertebral disc disorders Non-Billable/Non-Specific Codes M51.84Other intervertebral disc disorders, thoracic regionM51.85Other intervertebral disc disorders, thoracolumbar regionM51.86Other intervertebral disc disorders, lumbar regionM51.87Other intervertebral disc disorders, lumbosacral region