ICD-10-CM Section · M45-M49
Spondylopathies
241 codes in this section
241
Total Codes
192
Billable
49
Header (Non-Billable)
5
Top-Level Codes
About Section M45-M49
Section M45-M49 (M45-M49) covers spondylopathies. It sits within the Diseases of the musculoskeletal system and connective tissue chapter (M00-M99). This section contains 241 ICD-10-CM codes, 192 billable diagnoses you can submit on a claim, and 49 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in M45-M49
Grouped by 3-character root code. Click any code for full detail.
M45
Ankylosing spondylitis
21 subcodes
| M45.0 | Ankylosing spondylitis of multiple sites in spine | Billable |
| M45.1 | Ankylosing spondylitis of occipito-atlanto-axial region | Billable |
| M45.2 | Ankylosing spondylitis of cervical region | Billable |
| M45.3 | Ankylosing spondylitis of cervicothoracic region | Billable |
| M45.4 | Ankylosing spondylitis of thoracic region | Billable |
| M45.5 | Ankylosing spondylitis of thoracolumbar region | Billable |
| M45.6 | Ankylosing spondylitis lumbar region | Billable |
| M45.7 | Ankylosing spondylitis of lumbosacral region | Billable |
| M45.8 | Ankylosing spondylitis sacral and sacrococcygeal region | Billable |
| M45.9 | Ankylosing spondylitis of unspecified sites in spine | Billable |
| M45.A | Non-radiographic axial spondyloarthritis | Header |
| M45.A0 | Non-radiographic axial spondyloarthritis of unspecified sites in spine | Billable |
| M45.A1 | Non-radiographic axial spondyloarthritis of occipito-atlanto-axial region | Billable |
| M45.A2 | Non-radiographic axial spondyloarthritis of cervical region | Billable |
| M45.A3 | Non-radiographic axial spondyloarthritis of cervicothoracic region | Billable |
| M45.A4 | Non-radiographic axial spondyloarthritis of thoracic region | Billable |
| M45.A5 | Non-radiographic axial spondyloarthritis of thoracolumbar region | Billable |
| M45.A6 | Non-radiographic axial spondyloarthritis of lumbar region | Billable |
| M45.A7 | Non-radiographic axial spondyloarthritis of lumbosacral region | Billable |
| M45.A8 | Non-radiographic axial spondyloarthritis of sacral and sacrococcygeal region | Billable |
| M45.AB | Non-radiographic axial spondyloarthritis of multiple sites in spine | Billable |
M46
Other inflammatory spondylopathies
77 subcodes
| M46.0 | Spinal enthesopathy | Header |
| M46.00 | Spinal enthesopathy, site unspecified | Billable |
| M46.01 | Spinal enthesopathy, occipito-atlanto-axial region | Billable |
| M46.02 | Spinal enthesopathy, cervical region | Billable |
| M46.03 | Spinal enthesopathy, cervicothoracic region | Billable |
| M46.04 | Spinal enthesopathy, thoracic region | Billable |
| M46.05 | Spinal enthesopathy, thoracolumbar region | Billable |
| M46.06 | Spinal enthesopathy, lumbar region | Billable |
| M46.07 | Spinal enthesopathy, lumbosacral region | Billable |
| M46.08 | Spinal enthesopathy, sacral and sacrococcygeal region | Billable |
| M46.09 | Spinal enthesopathy, multiple sites in spine | Billable |
| M46.1 | Sacroiliitis, not elsewhere classified | Billable |
| M46.2 | Osteomyelitis of vertebra | Header |
| M46.20 | Osteomyelitis of vertebra, site unspecified | Billable |
| M46.21 | Osteomyelitis of vertebra, occipito-atlanto-axial region | Billable |
| M46.22 | Osteomyelitis of vertebra, cervical region | Billable |
| M46.23 | Osteomyelitis of vertebra, cervicothoracic region | Billable |
| M46.24 | Osteomyelitis of vertebra, thoracic region | Billable |
| M46.25 | Osteomyelitis of vertebra, thoracolumbar region | Billable |
| M46.26 | Osteomyelitis of vertebra, lumbar region | Billable |
| M46.27 | Osteomyelitis of vertebra, lumbosacral region | Billable |
| M46.28 | Osteomyelitis of vertebra, sacral and sacrococcygeal region | Billable |
| M46.3 | Infection of intervertebral disc (pyogenic) | Header |
| M46.30 | Infection of intervertebral disc (pyogenic), site unspecified | Billable |
| M46.31 | Infection of intervertebral disc (pyogenic), occipito-atlanto-axial region | Billable |
| M46.32 | Infection of intervertebral disc (pyogenic), cervical region | Billable |
| M46.33 | Infection of intervertebral disc (pyogenic), cervicothoracic region | Billable |
| M46.34 | Infection of intervertebral disc (pyogenic), thoracic region | Billable |
| M46.35 | Infection of intervertebral disc (pyogenic), thoracolumbar region | Billable |
| M46.36 | Infection of intervertebral disc (pyogenic), lumbar region | Billable |
| M46.37 | Infection of intervertebral disc (pyogenic), lumbosacral region | Billable |
| M46.38 | Infection of intervertebral disc (pyogenic), sacral and sacrococcygeal region | Billable |
| M46.39 | Infection of intervertebral disc (pyogenic), multiple sites in spine | Billable |
| M46.4 | Discitis, unspecified | Header |
| M46.40 | Discitis, unspecified, site unspecified | Billable |
| M46.41 | Discitis, unspecified, occipito-atlanto-axial region | Billable |
| M46.42 | Discitis, unspecified, cervical region | Billable |
| M46.43 | Discitis, unspecified, cervicothoracic region | Billable |
| M46.44 | Discitis, unspecified, thoracic region | Billable |
| M46.45 | Discitis, unspecified, thoracolumbar region | Billable |
| M46.46 | Discitis, unspecified, lumbar region | Billable |
| M46.47 | Discitis, unspecified, lumbosacral region | Billable |
| M46.48 | Discitis, unspecified, sacral and sacrococcygeal region | Billable |
| M46.49 | Discitis, unspecified, multiple sites in spine | Billable |
| M46.5 | Other infective spondylopathies | Header |
| M46.50 | Other infective spondylopathies, site unspecified | Billable |
| M46.51 | Other infective spondylopathies, occipito-atlanto-axial region | Billable |
| M46.52 | Other infective spondylopathies, cervical region | Billable |
| M46.53 | Other infective spondylopathies, cervicothoracic region | Billable |
| M46.54 | Other infective spondylopathies, thoracic region | Billable |
| M46.55 | Other infective spondylopathies, thoracolumbar region | Billable |
| M46.56 | Other infective spondylopathies, lumbar region | Billable |
| M46.57 | Other infective spondylopathies, lumbosacral region | Billable |
| M46.58 | Other infective spondylopathies, sacral and sacrococcygeal region | Billable |
| M46.59 | Other infective spondylopathies, multiple sites in spine | Billable |
| M46.8 | Other specified inflammatory spondylopathies | Header |
| M46.80 | Other specified inflammatory spondylopathies, site unspecified | Billable |
| M46.81 | Other specified inflammatory spondylopathies, occipito-atlanto-axial region | Billable |
| M46.82 | Other specified inflammatory spondylopathies, cervical region | Billable |
| M46.83 | Other specified inflammatory spondylopathies, cervicothoracic region | Billable |
| M46.84 | Other specified inflammatory spondylopathies, thoracic region | Billable |
| M46.85 | Other specified inflammatory spondylopathies, thoracolumbar region | Billable |
| M46.86 | Other specified inflammatory spondylopathies, lumbar region | Billable |
| M46.87 | Other specified inflammatory spondylopathies, lumbosacral region | Billable |
| M46.88 | Other specified inflammatory spondylopathies, sacral and sacrococcygeal region | Billable |
| M46.89 | Other specified inflammatory spondylopathies, multiple sites in spine | Billable |
| M46.9 | Unspecified inflammatory spondylopathy | Header |
| M46.90 | Unspecified inflammatory spondylopathy, site unspecified | Billable |
| M46.91 | Unspecified inflammatory spondylopathy, occipito-atlanto-axial region | Billable |
| M46.92 | Unspecified inflammatory spondylopathy, cervical region | Billable |
| M46.93 | Unspecified inflammatory spondylopathy, cervicothoracic region | Billable |
| M46.94 | Unspecified inflammatory spondylopathy, thoracic region | Billable |
| M46.95 | Unspecified inflammatory spondylopathy, thoracolumbar region | Billable |
| M46.96 | Unspecified inflammatory spondylopathy, lumbar region | Billable |
| M46.97 | Unspecified inflammatory spondylopathy, lumbosacral region | Billable |
| M46.98 | Unspecified inflammatory spondylopathy, sacral and sacrococcygeal region | Billable |
| M46.99 | Unspecified inflammatory spondylopathy, multiple sites in spine | Billable |
M47
Spondylosis
53 subcodes
| M47.0 | Anterior spinal and vertebral artery compression syndromes | Header |
| M47.01 | Anterior spinal artery compression syndromes | Header |
| M47.011 | Anterior spinal artery compression syndromes, occipito-atlanto-axial region | Billable |
| M47.012 | Anterior spinal artery compression syndromes, cervical region | Billable |
| M47.013 | Anterior spinal artery compression syndromes, cervicothoracic region | Billable |
| M47.014 | Anterior spinal artery compression syndromes, thoracic region | Billable |
| M47.015 | Anterior spinal artery compression syndromes, thoracolumbar region | Billable |
| M47.016 | Anterior spinal artery compression syndromes, lumbar region | Billable |
| M47.019 | Anterior spinal artery compression syndromes, site unspecified | Billable |
| M47.02 | Vertebral artery compression syndromes | Header |
| M47.021 | Vertebral artery compression syndromes, occipito-atlanto-axial region | Billable |
| M47.022 | Vertebral artery compression syndromes, cervical region | Billable |
| M47.029 | Vertebral artery compression syndromes, site unspecified | Billable |
| M47.1 | Other spondylosis with myelopathy | Header |
| M47.10 | Other spondylosis with myelopathy, site unspecified | Billable |
| M47.11 | Other spondylosis with myelopathy, occipito-atlanto-axial region | Billable |
| M47.12 | Other spondylosis with myelopathy, cervical region | Billable |
| M47.13 | Other spondylosis with myelopathy, cervicothoracic region | Billable |
| M47.14 | Other spondylosis with myelopathy, thoracic region | Billable |
| M47.15 | Other spondylosis with myelopathy, thoracolumbar region | Billable |
| M47.16 | Other spondylosis with myelopathy, lumbar region | Billable |
| M47.2 | Other spondylosis with radiculopathy | Header |
| M47.20 | Other spondylosis with radiculopathy, site unspecified | Billable |
| M47.21 | Other spondylosis with radiculopathy, occipito-atlanto-axial region | Billable |
| M47.22 | Other spondylosis with radiculopathy, cervical region | Billable |
| M47.23 | Other spondylosis with radiculopathy, cervicothoracic region | Billable |
| M47.24 | Other spondylosis with radiculopathy, thoracic region | Billable |
| M47.25 | Other spondylosis with radiculopathy, thoracolumbar region | Billable |
| M47.26 | Other spondylosis with radiculopathy, lumbar region | Billable |
| M47.27 | Other spondylosis with radiculopathy, lumbosacral region | Billable |
| M47.28 | Other spondylosis with radiculopathy, sacral and sacrococcygeal region | Billable |
| M47.8 | Other spondylosis | Header |
| M47.81 | Spondylosis without myelopathy or radiculopathy | Header |
| M47.811 | Spondylosis without myelopathy or radiculopathy, occipito-atlanto-axial region | Billable |
| M47.812 | Spondylosis without myelopathy or radiculopathy, cervical region | Billable |
| M47.813 | Spondylosis without myelopathy or radiculopathy, cervicothoracic region | Billable |
| M47.814 | Spondylosis without myelopathy or radiculopathy, thoracic region | Billable |
| M47.815 | Spondylosis without myelopathy or radiculopathy, thoracolumbar region | Billable |
| M47.816 | Spondylosis without myelopathy or radiculopathy, lumbar region | Billable |
| M47.817 | Spondylosis without myelopathy or radiculopathy, lumbosacral region | Billable |
| M47.818 | Spondylosis without myelopathy or radiculopathy, sacral and sacrococcygeal region | Billable |
| M47.819 | Spondylosis without myelopathy or radiculopathy, site unspecified | Billable |
| M47.89 | Other spondylosis | Header |
| M47.891 | Other spondylosis, occipito-atlanto-axial region | Billable |
| M47.892 | Other spondylosis, cervical region | Billable |
| M47.893 | Other spondylosis, cervicothoracic region | Billable |
| M47.894 | Other spondylosis, thoracic region | Billable |
| M47.895 | Other spondylosis, thoracolumbar region | Billable |
| M47.896 | Other spondylosis, lumbar region | Billable |
| M47.897 | Other spondylosis, lumbosacral region | Billable |
| M47.898 | Other spondylosis, sacral and sacrococcygeal region | Billable |
| M47.899 | Other spondylosis, site unspecified | Billable |
| M47.9 | Spondylosis, unspecified | Billable |
M48
Other spondylopathies
74 subcodes
| M48.0 | Spinal stenosis | Header |
| M48.00 | Spinal stenosis, site unspecified | Billable |
| M48.01 | Spinal stenosis, occipito-atlanto-axial region | Billable |
| M48.02 | Spinal stenosis, cervical region | Billable |
| M48.03 | Spinal stenosis, cervicothoracic region | Billable |
| M48.04 | Spinal stenosis, thoracic region | Billable |
| M48.05 | Spinal stenosis, thoracolumbar region | Billable |
| M48.06 | Spinal stenosis, lumbar region | Header |
| M48.061 | Spinal stenosis, lumbar region without neurogenic claudication | Billable |
| M48.062 | Spinal stenosis, lumbar region with neurogenic claudication | Billable |
| M48.07 | Spinal stenosis, lumbosacral region | Billable |
| M48.08 | Spinal stenosis, sacral and sacrococcygeal region | Billable |
| M48.1 | Ankylosing hyperostosis [Forestier] | Header |
| M48.10 | Ankylosing hyperostosis [Forestier], site unspecified | Billable |
| M48.11 | Ankylosing hyperostosis [Forestier], occipito-atlanto-axial region | Billable |
| M48.12 | Ankylosing hyperostosis [Forestier], cervical region | Billable |
| M48.13 | Ankylosing hyperostosis [Forestier], cervicothoracic region | Billable |
| M48.14 | Ankylosing hyperostosis [Forestier], thoracic region | Billable |
| M48.15 | Ankylosing hyperostosis [Forestier], thoracolumbar region | Billable |
| M48.16 | Ankylosing hyperostosis [Forestier], lumbar region | Billable |
| M48.17 | Ankylosing hyperostosis [Forestier], lumbosacral region | Billable |
| M48.18 | Ankylosing hyperostosis [Forestier], sacral and sacrococcygeal region | Billable |
| M48.19 | Ankylosing hyperostosis [Forestier], multiple sites in spine | Billable |
| M48.2 | Kissing spine | Header |
| M48.20 | Kissing spine, site unspecified | Billable |
| M48.21 | Kissing spine, occipito-atlanto-axial region | Billable |
| M48.22 | Kissing spine, cervical region | Billable |
| M48.23 | Kissing spine, cervicothoracic region | Billable |
| M48.24 | Kissing spine, thoracic region | Billable |
| M48.25 | Kissing spine, thoracolumbar region | Billable |
| M48.26 | Kissing spine, lumbar region | Billable |
| M48.27 | Kissing spine, lumbosacral region | Billable |
| M48.3 | Traumatic spondylopathy | Header |
| M48.30 | Traumatic spondylopathy, site unspecified | Billable |
| M48.31 | Traumatic spondylopathy, occipito-atlanto-axial region | Billable |
| M48.32 | Traumatic spondylopathy, cervical region | Billable |
| M48.33 | Traumatic spondylopathy, cervicothoracic region | Billable |
| M48.34 | Traumatic spondylopathy, thoracic region | Billable |
| M48.35 | Traumatic spondylopathy, thoracolumbar region | Billable |
| M48.36 | Traumatic spondylopathy, lumbar region | Billable |
| M48.37 | Traumatic spondylopathy, lumbosacral region | Billable |
| M48.38 | Traumatic spondylopathy, sacral and sacrococcygeal region | Billable |
| M48.4 | Fatigue fracture of vertebra | Header |
| M48.40 | Fatigue fracture of vertebra, site unspecified | Header |
| M48.41 | Fatigue fracture of vertebra, occipito-atlanto-axial region | Header |
| M48.42 | Fatigue fracture of vertebra, cervical region | Header |
| M48.43 | Fatigue fracture of vertebra, cervicothoracic region | Header |
| M48.44 | Fatigue fracture of vertebra, thoracic region | Header |
| M48.45 | Fatigue fracture of vertebra, thoracolumbar region | Header |
| M48.46 | Fatigue fracture of vertebra, lumbar region | Header |
| M48.47 | Fatigue fracture of vertebra, lumbosacral region | Header |
| M48.48 | Fatigue fracture of vertebra, sacral and sacrococcygeal region | Header |
| M48.5 | Collapsed vertebra, not elsewhere classified | Header |
| M48.50 | Collapsed vertebra, not elsewhere classified, site unspecified | Header |
| M48.51 | Collapsed vertebra, not elsewhere classified, occipito-atlanto-axial region | Header |
| M48.52 | Collapsed vertebra, not elsewhere classified, cervical region | Header |
| M48.53 | Collapsed vertebra, not elsewhere classified, cervicothoracic region | Header |
| M48.54 | Collapsed vertebra, not elsewhere classified, thoracic region | Header |
| M48.55 | Collapsed vertebra, not elsewhere classified, thoracolumbar region | Header |
| M48.56 | Collapsed vertebra, not elsewhere classified, lumbar region | Header |
| M48.57 | Collapsed vertebra, not elsewhere classified, lumbosacral region | Header |
| M48.58 | Collapsed vertebra, not elsewhere classified, sacral and sacrococcygeal region | Header |
| M48.8 | Other specified spondylopathies | Header |
| M48.8X | Other specified spondylopathies | Header |
| M48.8X1 | Other specified spondylopathies, occipito-atlanto-axial region | Billable |
| M48.8X2 | Other specified spondylopathies, cervical region | Billable |
| M48.8X3 | Other specified spondylopathies, cervicothoracic region | Billable |
| M48.8X4 | Other specified spondylopathies, thoracic region | Billable |
| M48.8X5 | Other specified spondylopathies, thoracolumbar region | Billable |
| M48.8X6 | Other specified spondylopathies, lumbar region | Billable |
| M48.8X7 | Other specified spondylopathies, lumbosacral region | Billable |
| M48.8X8 | Other specified spondylopathies, sacral and sacrococcygeal region | Billable |
| M48.8X9 | Other specified spondylopathies, site unspecified | Billable |
| M48.9 | Spondylopathy, unspecified | Billable |
M49
Spondylopathies in diseases classified elsewhere
11 subcodes
| M49.8 | Spondylopathy in diseases classified elsewhere | Header |
| M49.80 | Spondylopathy in diseases classified elsewhere, site unspecified | Billable |
| M49.81 | Spondylopathy in diseases classified elsewhere, occipito-atlanto-axial region | Billable |
| M49.82 | Spondylopathy in diseases classified elsewhere, cervical region | Billable |
| M49.83 | Spondylopathy in diseases classified elsewhere, cervicothoracic region | Billable |
| M49.84 | Spondylopathy in diseases classified elsewhere, thoracic region | Billable |
| M49.85 | Spondylopathy in diseases classified elsewhere, thoracolumbar region | Billable |
| M49.86 | Spondylopathy in diseases classified elsewhere, lumbar region | Billable |
| M49.87 | Spondylopathy in diseases classified elsewhere, lumbosacral region | Billable |
| M49.88 | Spondylopathy in diseases classified elsewhere, sacral and sacrococcygeal region | Billable |
| M49.89 | Spondylopathy in diseases classified elsewhere, multiple sites in spine | Billable |
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Verified against the CMS 2026 code set on May 31, 2026.
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