| M503 | Other cervical disc degeneration |
| M5030 | Other cervical disc degeneration, unspecified cervical region |
| M5031 | Other cervical disc degeneration, high cervical region |
| M5032 | Other cervical disc degeneration, mid-cervical region |
| M50320 | Other cervical disc degeneration, mid-cervical region, unspecified level |
| M50321 | Other cervical disc degeneration at C4-C5 level |
| M50322 | Other cervical disc degeneration at C5-C6 level |
| M50323 | Other cervical disc degeneration at C6-C7 level |
| M5033 | Other cervical disc degeneration, cervicothoracic region |
| M508 | Other cervical disc disorders |
| M5080 | Other cervical disc disorders, unspecified cervical region |
| M5081 | Other cervical disc disorders, high cervical region |
| M5082 | Other cervical disc disorders, mid-cervical region |
| M50820 | Other cervical disc disorders, mid-cervical region, unspecified level |
| M50821 | Other cervical disc disorders at C4-C5 level |
| M50822 | Other cervical disc disorders at C5-C6 level |
| M50823 | Other cervical disc disorders at C6-C7 level |
| M5083 | Other cervical disc disorders, cervicothoracic region |
| M509 | Cervical disc disorder, unspecified |
| M5090 | Cervical disc disorder, unspecified, unspecified cervical region |
| M5091 | Cervical disc disorder, unspecified, high cervical region |
| M5092 | Cervical disc disorder, unspecified, mid-cervical region |
| M50920 | Unsp cervical disc disorder, mid-cervical region, unsp level Unspecified cervical disc disorder, mid-cervical region, unspecified level |
| M50921 | Unspecified cervical disc disorder at C4-C5 level |
| M50922 | Unspecified cervical disc disorder at C5-C6 level |
| M50923 | Unspecified cervical disc disorder at C6-C7 level |
| M5093 | Cervical disc disorder, unspecified, cervicothoracic region |
| M51 | Thoracic, thoracolumbar, and lumbosacral intervertebral disc disorders |
| M510 | Thoracic, thrclm and lumbosacr intvrt disc disord w myelpath Thoracic, thoracolumbar and lumbosacral intervertebral disc disorders with myelopathy |
| M5104 | Intervertebral disc disorders with myelopathy, thoracic region |
| M5105 | Intervertebral disc disorders with myelopathy, thoracolumbar region |
| M5106 | Intervertebral disc disorders with myelopathy, lumbar region Intervertebral disc disorders with myelopathy, lumbar region |
| M511 | Thoracic, thoracolumbar and lumbosacral intervertebral disc disorders with radiculopathy |
| M5114 | Intervertebral disc disorders with radiculopathy, thoracic region |
| M5115 | Intervertebral disc disorders with radiculopathy, thoracolumbar region |
| M5116 | Intervertebral disc disorders w radiculopathy, lumbar region Intervertebral disc disorders with radiculopathy, lumbar region |
| M5117 | Intervertebral disc disorders with radiculopathy, lumbosacral region |
| M512 | Other thoracic, thoracolumbar and lumbosacral intervertebral disc displacement |
| M5124 | Other intervertebral disc displacement, thoracic region |
| M5125 | Other intervertebral disc displacement, thoracolumbar region Other intervertebral disc displacement, thoracolumbar region |
| M5126 | Other intervertebral disc displacement, lumbar region |
| M5127 | Other intervertebral disc displacement, lumbosacral region |
| M513 | Other thoracic, thoracolumbar and lumbosacral intervertebral disc degeneration |
| M5134 | Other intervertebral disc degeneration, thoracic region |
| M5135 | Other intervertebral disc degeneration, thoracolumbar region Other intervertebral disc degeneration, thoracolumbar region |
| M5136 | Other intervertebral disc degeneration, lumbar region |
| M51360 | Other intervertebral disc degeneration, lumbar region with discogenic back pain only |
| M51361 | Other intvrt disc degen, lum region with low extrm pain only Other intervertebral disc degeneration, lumbar region with lower extremity pain only |
| M51362 | Other intervertebral disc degeneration, lumbar region with discogenic back pain and lower extremity pain |
| M51369 | Other intervertebral disc degeneration, lumbar region without mention of lumbar back pain or lower extremity pain |