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M45.1 Ankylosing spondylitis of occipito-atlanto-axial region
BackM45Ankylosing spondylitisCategory11 →M45.0Ankylosing spondylitis of multiple sites in spineCategoryM45.1Ankylosing spondylitis of occipito-atlanto-axial regionCategoryM45.2Ankylosing spondylitis of cervical regionCategoryM45.3Ankylosing spondylitis of cervicothoracic regionCategoryM45.4Ankylosing spondylitis of thoracic regionCategoryM45.5Ankylosing spondylitis of thoracolumbar regionCategoryM45.6Ankylosing spondylitis lumbar regionCategoryM45.7Ankylosing spondylitis of lumbosacral regionCategoryM45.8Ankylosing spondylitis sacral and sacrococcygeal regionCategoryM45.9Ankylosing spondylitis of unspecified sites in spineCategoryM45.ANon-radiographic axial spondyloarthritisCategory10 →M45.A0Non-radiographic axial spondyloarthritis of unspecified sites in spineCategoryM45.A1Non-radiographic axial spondyloarthritis of occipito-atlanto-axial regionCategoryM45.A2Non-radiographic axial spondyloarthritis of cervical regionCategoryM45.A3Non-radiographic axial spondyloarthritis of cervicothoracic regionCategoryM45.A4Non-radiographic axial spondyloarthritis of thoracic regionCategoryM45.A5Non-radiographic axial spondyloarthritis of thoracolumbar regionCategoryM45.A6Non-radiographic axial spondyloarthritis of lumbar regionCategoryM45.A7Non-radiographic axial spondyloarthritis of lumbosacral regionCategoryM45.A8Non-radiographic axial spondyloarthritis of sacral and sacrococcygeal regionCategoryM45.ABNon-radiographic axial spondyloarthritis of multiple sites in spineCategory
CategoryCODABLE
M45.1
Ankylosing spondylitis of occipito-atlanto-axial region
- Chapter
- XIII · Diseases of the musculoskeletal system and connective tissue
- Section
- M45-M49
- Valid from
Source
CMS ICD-10-CM Tabular List, edition FY2026.