| M53 | Other and unspecified dorsopathies, not elsewhere classified | NON-BILLABLE CODE |
| M53.0 | Cervicocranial syndrome | BILLABLE CODE |
| M53.2 | Spinal instabilities | NON-BILLABLE CODE |
| M53.2X | Spinal instabilities | NON-BILLABLE CODE |
| M53.2X1 | Spinal instabilities, occipito-atlanto-axial region | BILLABLE CODE |
| M53.2X2 | Spinal instabilities, cervical region | BILLABLE CODE |
| M53.2X3 | Spinal instabilities, cervicothoracic region | BILLABLE CODE |
| M53.2X4 | Spinal instabilities, thoracic region | BILLABLE CODE |
| M53.2X5 | Spinal instabilities, thoracolumbar region | BILLABLE CODE |
| M53.2X6 | Spinal instabilities, lumbar region | BILLABLE CODE |
| M53.2X7 | Spinal instabilities, lumbosacral region | BILLABLE CODE |
| M53.2X8 | Spinal instabilities, sacral and sacrococcygeal region | BILLABLE CODE |
| M53.2X9 | Spinal instabilities, site unspecified | BILLABLE CODE |
| M53.3 | Sacrococcygeal disorders, not elsewhere classified | BILLABLE CODE |
| M53.8 | Other specified dorsopathies | NON-BILLABLE CODE |
| M53.80 | Other specified dorsopathies, site unspecified | BILLABLE CODE |
| M53.81 | Other specified dorsopathies, occipito-atlanto-axial region | BILLABLE CODE |
| M53.82 | Other specified dorsopathies, cervical region | BILLABLE CODE |
| M53.83 | Other specified dorsopathies, cervicothoracic region | BILLABLE CODE |
| M53.84 | Other specified dorsopathies, thoracic region | BILLABLE CODE |
| M53.85 | Other specified dorsopathies, thoracolumbar region | BILLABLE CODE |
| M53.86 | Other specified dorsopathies, lumbar region | BILLABLE CODE |
| M53.87 | Other specified dorsopathies, lumbosacral region | BILLABLE CODE |
| M53.88 | Other specified dorsopathies, sacral and sacrococcygeal region | BILLABLE CODE |
| M53.9 | Dorsopathy, unspecified | BILLABLE CODE |
