M45 Ankylosing spondylitis

Coding Notes

Active
Non-billable / Non-specific, not valid for HIPAA-covered transactions

Type 1 Excludes

arthropathy in Reiter's disease (M02.3-)
juvenile (ankylosing) spondylitis (M08.1)

Tyoe 2 Excludes

Behçet's disease (M35.2)

Applicable To

Rheumatoid arthritis of spine

Child Codes


Sibling Codes


View in Tabular

Code Title
M00-M99 Diseases of the musculoskeletal system and connective tissue (M00-M99)
M45-M49 Spondylopathies (M45-M49)
M45 Ankylosing spondylitis
Type 1 Excludes
arthropathy in Reiter's disease (M02.3-)
juvenile (ankylosing) spondylitis (M08.1)

Type 2 Excludes
Behçet's disease (M35.2)

Applicable to
Rheumatoid arthritis of spine

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.A Non-radiographic axial spondyloarthritis
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