ICD-10-CM > M00-M99 > M50-M54 > M51 > M51.4 M51.4 Schmorl's nodes Non-Billable/Non-Specific Codes M51.44Schmorl's nodes, thoracic regionM51.45Schmorl's nodes, thoracolumbar regionM51.46Schmorl's nodes, lumbar regionM51.47Schmorl's nodes, lumbosacral region