M45 Ankylosing spondylitis
ICD-10-CM category M45 sits in Chapter 13 (Diseases of the musculoskeletal system and connective tissue, M00-M99). It contains 20 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
M45.A Non-radiographic axial spondyloarthritis
Billable codes in M45
| Code | Description |
|---|---|
M45.0 | Ankylosing spondylitis of multiple sites in spine |
M45.1 | Ankylosing spondylitis of occipito-atlanto-axial region |
M45.2 | Ankylosing spondylitis of cervical region |
M45.3 | Ankylosing spondylitis of cervicothoracic region |
M45.4 | Ankylosing spondylitis of thoracic region |
M45.5 | Ankylosing spondylitis of thoracolumbar region |
M45.6 | Ankylosing spondylitis lumbar region |
M45.7 | Ankylosing spondylitis of lumbosacral region |
M45.8 | Ankylosing spondylitis sacral and sacrococcygeal region |
M45.9 | Ankylosing spondylitis of unspecified sites in spine |
M45.A0 | Non-radiographic axial spondyloarthritis of unspecified sites in spine |
M45.A1 | Non-radiographic axial spondyloarthritis of occipito-atlanto-axial region |
M45.A2 | Non-radiographic axial spondyloarthritis of cervical region |
M45.A3 | Non-radiographic axial spondyloarthritis of cervicothoracic region |
M45.A4 | Non-radiographic axial spondyloarthritis of thoracic region |
M45.A5 | Non-radiographic axial spondyloarthritis of thoracolumbar region |
M45.A6 | Non-radiographic axial spondyloarthritis of lumbar region |
M45.A7 | Non-radiographic axial spondyloarthritis of lumbosacral region |
M45.A8 | Non-radiographic axial spondyloarthritis of sacral and sacrococcygeal region |
M45.AB | Non-radiographic axial spondyloarthritis of multiple sites in spine |
Search within ICD-10-CM for M45 and related codes
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