TheCardiovascular
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M45 Ankylosing spondylitis

BackM45.0Ankylosing spondylitis of multiple sites in spineM45.1Ankylosing spondylitis of occipito-atlanto-axial regionM45.2Ankylosing spondylitis of cervical regionM45.3Ankylosing spondylitis of cervicothoracic regionM45.4Ankylosing spondylitis of thoracic regionM45.5Ankylosing spondylitis of thoracolumbar regionM45.6Ankylosing spondylitis lumbar regionM45.7Ankylosing spondylitis of lumbosacral regionM45.8Ankylosing spondylitis sacral and sacrococcygeal regionM45.9Ankylosing spondylitis of unspecified sites in spineM45.ANon-radiographic axial spondyloarthritis10 →M45.A0Non-radiographic axial spondyloarthritis of unspecified sites in spineM45.A1Non-radiographic axial spondyloarthritis of occipito-atlanto-axial regionM45.A2Non-radiographic axial spondyloarthritis of cervical regionM45.A3Non-radiographic axial spondyloarthritis of cervicothoracic regionM45.A4Non-radiographic axial spondyloarthritis of thoracic regionM45.A5Non-radiographic axial spondyloarthritis of thoracolumbar regionM45.A6Non-radiographic axial spondyloarthritis of lumbar regionM45.A7Non-radiographic axial spondyloarthritis of lumbosacral regionM45.A8Non-radiographic axial spondyloarthritis of sacral and sacrococcygeal regionM45.ABNon-radiographic axial spondyloarthritis of multiple sites in spine
Category
M45
Ankylosing spondylitis
EXAMPLES
Rheumatoid arthritis of spine
EXCLUDES
Excludes1: arthropathy in Reiter's disease (M02.3-)
juvenile (ankylosing) spondylitis (M08.1)
Excludes2: Behçet's disease (M35.2)
Chapter
XIII · Diseases of the musculoskeletal system and connective tissue
Section
M45-M49
Valid from
Source

CMS ICD-10-CM Tabular List, edition FY2026.

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