| M5137 | Other intervertebral disc degeneration, lumbosacral region |
| M51370 | Other intervertebral disc degeneration, lumbosacral region with discogenic back pain only |
| M51371 | Other intervertebral disc degeneration, lumbosacral region with lower extremity pain only |
| M51372 | Other intervertebral disc degeneration, lumbosacral region with discogenic back pain and lower extremity pain |
| M51379 | Other intervertebral disc degeneration, lumbosacral region without mention of lumbar back pain or lower extremity pain |
| M514 | Schmorl's nodes |
| M5144 | Schmorl's nodes, thoracic region |
| M5145 | Schmorl's nodes, thoracolumbar region |
| M5146 | Schmorl's nodes, lumbar region |
| M5147 | Schmorl's nodes, lumbosacral region |
| M518 | Oth thoracic, thoracolum and lumbosacr intvrt disc disorders Other thoracic, thoracolumbar and lumbosacral intervertebral disc disorders |
| M5184 | Other intervertebral disc disorders, thoracic region |
| M5185 | Other intervertebral disc disorders, thoracolumbar region |
| M5186 | Other intervertebral disc disorders, lumbar region |
| M5187 | Other intervertebral disc disorders, lumbosacral region |
| M519 | Unsp thoracic, thoracolum and lumbosacr intvrt disc disorder Unspecified thoracic, thoracolumbar and lumbosacral intervertebral disc disorder |
| M51A | Other lumbar and lumbosacral annulus fibrosus disc defects |
| M51A0 | Intervertebral annulus fibrosus defect, lumbar region, unspecified size |
| M51A1 | Intervertebral annulus fibrosus defect, small, lumbar region Intervertebral annulus fibrosus defect, small, lumbar region |
| M51A2 | Intervertebral annulus fibrosus defect, large, lumbar region Intervertebral annulus fibrosus defect, large, lumbar region |
| M51A3 | Intervertebral annulus fibrosus defect, lumbosacral region, unspecified size |
| M51A4 | Intervertebral annulus fibrosus defect, small, lumbosacral region |
| M51A5 | Intervertebral annulus fibrosus defect, large, lumbosacral region |
| M53 | Other and unspecified dorsopathies, not elsewhere classified Other and unspecified dorsopathies, not elsewhere classified |
| M530 | Cervicocranial syndrome |
| M531 | Cervicobrachial syndrome |
| M532 | Spinal instabilities |
| M532X | Spinal instabilities |
| M532X1 | Spinal instabilities, occipito-atlanto-axial region |
| M532X2 | Spinal instabilities, cervical region |
| M532X3 | Spinal instabilities, cervicothoracic region |
| M532X4 | Spinal instabilities, thoracic region |
| M532X5 | Spinal instabilities, thoracolumbar region |
| M532X6 | Spinal instabilities, lumbar region |
| M532X7 | Spinal instabilities, lumbosacral region |
| M532X8 | Spinal instabilities, sacral and sacrococcygeal region |
| M532X9 | Spinal instabilities, site unspecified |
| M533 | Sacrococcygeal disorders, not elsewhere classified |
| M538 | Other specified dorsopathies |
| M5380 | Other specified dorsopathies, site unspecified |
| M5381 | Other specified dorsopathies, occipito-atlanto-axial region |
| M5382 | Other specified dorsopathies, cervical region |
| M5383 | Other specified dorsopathies, cervicothoracic region |
| M5384 | Other specified dorsopathies, thoracic region |
| M5385 | Other specified dorsopathies, thoracolumbar region |
| M5386 | Other specified dorsopathies, lumbar region |
| M5387 | Other specified dorsopathies, lumbosacral region |
| M5388 | Other specified dorsopathies, sacral and sacrococcygeal region |
| M539 | Dorsopathy, unspecified |
| M54 | Dorsalgia |