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M45.A0 Non-radiographic axial spondyloarthritis of unspecified sites in spine
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M45.A1 Non-radiographic axial spondyloarthritis of occipito-atlanto-axial region
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M45.A2 Non-radiographic axial spondyloarthritis of cervical region
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M45.A3 Non-radiographic axial spondyloarthritis of cervicothoracic region
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M45.A4 Non-radiographic axial spondyloarthritis of thoracic region
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M45.A5 Non-radiographic axial spondyloarthritis of thoracolumbar region
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M45.A6 Non-radiographic axial spondyloarthritis of lumbar region
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M45.A7 Non-radiographic axial spondyloarthritis of lumbosacral region
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M45.A8 Non-radiographic axial spondyloarthritis of sacral and sacrococcygeal region
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M45.AB Non-radiographic axial spondyloarthritis of multiple sites in spine