ICD-10-CM > M00-M99 > M50-M54 > M51 > M51.1 M51.1 Thoracic, thoracolumbar and lumbosacral intervertebral disc disorders with radiculopathy Non-Billable/Non-Specific Applicable To Sciatica due to intervertebral disc disorder Type 1 Excludes lumbar radiculitis NOS (M54.16)sciatica NOS (M54.3) Codes M51.14Intervertebral disc disorders with radiculopathy, thoracic regionM51.15Intervertebral disc disorders with radiculopathy, thoracolumbar regionM51.16Intervertebral disc disorders with radiculopathy, lumbar regionM51.17Intervertebral disc disorders with radiculopathy, lumbosacral region