| M50 | Cervical disc disorders |
| M50.0 | Cervical disc disorder with myelopathy |
| M50.00 | Cervical disc disorder with myelopathy, unspecified cervical region |
| M50.01 | Cervical disc disorder with myelopathy, high cervical region |
| M50.02 | Cervical disc disorder with myelopathy, mid-cervical region |
| M50.03 | Cervical disc disorder with myelopathy, cervicothoracic region |
| M50.1 | Cervical disc disorder with radiculopathy |
| M50.10 | Cervical disc disorder with radiculopathy, unspecified cervical region |
| M50.11 | Cervical disc disorder with radiculopathy, high cervical region |
| M50.12 | Cervical disc disorder with radiculopathy, mid-cervical region |
| M50.13 | Cervical disc disorder with radiculopathy, cervicothoracic region |
| M50.2 | Other cervical disc displacement |
| M50.20 | Other cervical disc displacement, unspecified cervical region |
| M50.21 | Other cervical disc displacement, high cervical region |
| M50.22 | Other cervical disc displacement, mid-cervical region |
| M50.23 | Other cervical disc displacement, cervicothoracic region |
| M50.3 | Other cervical disc degeneration |
| M50.30 | Other cervical disc degeneration, unspecified cervical region |
| M50.31 | Other cervical disc degeneration, high cervical region |
| M50.32 | Other cervical disc degeneration, mid-cervical region |
| M50.33 | Other cervical disc degeneration, cervicothoracic region |
| M50.8 | Other cervical disc disorders |
| M50.80 | Other cervical disc disorders, unspecified cervical region |
| M50.81 | Other cervical disc disorders, high cervical region |
| M50.82 | Other cervical disc disorders, mid-cervical region |
| M50.83 | Other cervical disc disorders, cervicothoracic region |
| M50.9 | Cervical disc disorder, unspecified |
| M50.90 | Cervical disc disorder, unspecified, unspecified cervical region |
| M50.91 | Cervical disc disorder, unspecified, high cervical region |
| M50.92 | Cervical disc disorder, unspecified, mid-cervical region |
| M50.93 | Cervical disc disorder, unspecified, cervicothoracic region |
| M51 | Thoracic, thoracolumbar, and lumbosacral intervertebral disc disorders |
| M51.0 | Thoracic, thoracolumbar and lumbosacral intervertebral disc disorders with myelopathy |
| M51.04 | Intervertebral disc disorders with myelopathy, thoracic region |
| M51.05 | Intervertebral disc disorders with myelopathy, thoracolumbar region |
| M51.06 | Intervertebral disc disorders with myelopathy, lumbar region |
| M51.1 | Thoracic, thoracolumbar and lumbosacral intervertebral disc disorders with radiculopathy |
| M51.14 | Intervertebral disc disorders with radiculopathy, thoracic region |
| M51.15 | Intervertebral disc disorders with radiculopathy, thoracolumbar region |
| M51.16 | Intervertebral disc disorders with radiculopathy, lumbar region |
| M51.17 | Intervertebral disc disorders with radiculopathy, lumbosacral region |
| M51.2 | Other thoracic, thoracolumbar and lumbosacral intervertebral disc displacement |
| M51.24 | Other intervertebral disc displacement, thoracic region |
| M51.25 | Other intervertebral disc displacement, thoracolumbar region |
| M51.26 | Other intervertebral disc displacement, lumbar region |
| M51.27 | Other intervertebral disc displacement, lumbosacral region |
| M51.3 | Other thoracic, thoracolumbar and lumbosacral intervertebral disc degeneration |
| M51.34 | Other intervertebral disc degeneration, thoracic region |
| M51.35 | Other intervertebral disc degeneration, thoracolumbar region |
| M51.36 | Other intervertebral disc degeneration, lumbar region |
| M51.37 | Other intervertebral disc degeneration, lumbosacral region |
| M51.4 | Schmorl's nodes |
| M51.44 | Schmorl's nodes, thoracic region |
| M51.45 | Schmorl's nodes, thoracolumbar region |
| M51.46 | Schmorl's nodes, lumbar region |
| M51.47 | Schmorl's nodes, lumbosacral region |
| M51.8 | Other thoracic, thoracolumbar and lumbosacral intervertebral disc disorders |
| M51.84 | Other intervertebral disc disorders, thoracic region |
| M51.85 | Other intervertebral disc disorders, thoracolumbar region |
| M51.86 | Other intervertebral disc disorders, lumbar region |
| M51.87 | Other intervertebral disc disorders, lumbosacral region |
| M51.9 | Unspecified thoracic, thoracolumbar and lumbosacral intervertebral disc disorder |
| M53 | Other and unspecified dorsopathies, not elsewhere classified |
| M53.0 | Cervicocranial syndrome |
| M53.1 | Cervicobrachial syndrome |
| M53.2 | Spinal instabilities |
| M53.2X | Spinal instabilities |
| M53.2X1 | Spinal instabilities, occipito-atlanto-axial region |
| M53.2X2 | Spinal instabilities, cervical region |
| M53.2X3 | Spinal instabilities, cervicothoracic region |
| M53.2X4 | Spinal instabilities, thoracic region |
| M53.2X5 | Spinal instabilities, thoracolumbar region |
| M53.2X6 | Spinal instabilities, lumbar region |
| M53.2X7 | Spinal instabilities, lumbosacral region |
| M53.2X8 | Spinal instabilities, sacral and sacrococcygeal region |
| M53.2X9 | Spinal instabilities, site unspecified |
| M53.3 | Sacrococcygeal disorders, not elsewhere classified |
| M53.8 | Other specified dorsopathies |
| M53.80 | Other specified dorsopathies, site unspecified |
| M53.81 | Other specified dorsopathies, occipito-atlanto-axial region |
| M53.82 | Other specified dorsopathies, cervical region |
| M53.83 | Other specified dorsopathies, cervicothoracic region |
| M53.84 | Other specified dorsopathies, thoracic region |
| M53.85 | Other specified dorsopathies, thoracolumbar region |
| M53.86 | Other specified dorsopathies, lumbar region |
| M53.87 | Other specified dorsopathies, lumbosacral region |
| M53.88 | Other specified dorsopathies, sacral and sacrococcygeal region |
| M53.9 | Dorsopathy, unspecified |
| M54 | Dorsalgia |
| M54.0 | Panniculitis affecting regions of neck and back |
| M54.00 | Panniculitis affecting regions of neck and back, site unspecified |
| M54.01 | Panniculitis affecting regions of neck and back, occipito-atlanto-axial region |
| M54.02 | Panniculitis affecting regions of neck and back, cervical region |
| M54.03 | Panniculitis affecting regions of neck and back, cervicothoracic region |
| M54.04 | Panniculitis affecting regions of neck and back, thoracic region |
| M54.05 | Panniculitis affecting regions of neck and back, thoracolumbar region |
| M54.06 | Panniculitis affecting regions of neck and back, lumbar region |
| M54.07 | Panniculitis affecting regions of neck and back, lumbosacral region |
| M54.08 | Panniculitis affecting regions of neck and back, sacral and sacrococcygeal region |
| M54.09 | Panniculitis affecting regions, neck and back, multiple sites in spine |
| M54.1 | Radiculopathy |
| M54.10 | Radiculopathy, site unspecified |
| M54.11 | Radiculopathy, occipito-atlanto-axial region |
| M54.12 | Radiculopathy, cervical region |
| M54.13 | Radiculopathy, cervicothoracic region |
| M54.14 | Radiculopathy, thoracic region |
| M54.15 | Radiculopathy, thoracolumbar region |
| M54.16 | Radiculopathy, lumbar region |
| M54.17 | Radiculopathy, lumbosacral region |
| M54.18 | Radiculopathy, sacral and sacrococcygeal region |
| M54.2 | Cervicalgia |
| M54.3 | Sciatica |
| M54.30 | Sciatica, unspecified side |
| M54.31 | Sciatica, right side |
| M54.32 | Sciatica, left side |
| M54.4 | Lumbago with sciatica |
| M54.40 | Lumbago with sciatica, unspecified side |
| M54.41 | Lumbago with sciatica, right side |
| M54.42 | Lumbago with sciatica, left side |
| M54.5 | Low back pain |
| M54.6 | Pain in thoracic spine |
| M54.8 | Other dorsalgia |
| M54.81 | Occipital neuralgia |
| M54.89 | Other dorsalgia |
| M54.9 | Dorsalgia, unspecified |