M45.A
Header — not billableNon-radiographic axial spondyloarthritis
The ICD-10 code for non-radiographic axial spondyloarthritis is M45.A.
M45.A is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 10 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under M45.A
- M45.A0Non-radiographic axial spondyloarthritis of unspecified sites in spine
- M45.A1Non-radiographic axial spondyloarthritis of occipito-atlanto-axial region
- M45.A2Non-radiographic axial spondyloarthritis of cervical region
- M45.A3Non-radiographic axial spondyloarthritis of cervicothoracic region
- M45.A4Non-radiographic axial spondyloarthritis of thoracic region
- M45.A5Non-radiographic axial spondyloarthritis of thoracolumbar region
- M45.A6Non-radiographic axial spondyloarthritis of lumbar region
- M45.A7Non-radiographic axial spondyloarthritis of lumbosacral region
- M45.A8Non-radiographic axial spondyloarthritis of sacral and sacrococcygeal region
- M45.ABNon-radiographic axial spondyloarthritis of multiple sites in spine
Related codes in this category
- M45.0Ankylosing spondylitis of multiple sites in spine
- M45.1Ankylosing spondylitis of occipito-atlanto-axial region
- M45.2Ankylosing spondylitis of cervical region
- M45.3Ankylosing spondylitis of cervicothoracic region
- M45.4Ankylosing spondylitis of thoracic region
- M45.5Ankylosing spondylitis of thoracolumbar region
- M45.6Ankylosing spondylitis lumbar region
- M45.7Ankylosing spondylitis of lumbosacral region
- M45.8Ankylosing spondylitis sacral and sacrococcygeal region
- M45.9Ankylosing spondylitis of unspecified sites in spine
- M45.ANon-radiographic axial spondyloarthritisnon-billable header