M45.A Non-radiographic axial spondyloarthritis

Non-billable header with 10 child codes.

Applies from M45 Ankylosing spondylitis

Applicable to

• Rheumatoid arthritis of spine

Excludes1 (never code together)

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

Excludes2 (not included here)

• Behçet's disease (M35.2)

Codes under M45.A

• 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

Code annotations containing back-references to M45.A

Back-references to M45

• Type 1 Excludes: G55 Nerve root and plexus compressions in diseases classified elsewhere ("nerve root compression (due to) (in) ankylosing spondylitis (M45.-)")
• Code First: J99 Respiratory disorders in diseases classified elsewhere ("ankylosing spondylitis (M45.-)")
• Type 1 Excludes: M05 Rheumatoid arthritis with rheumatoid factor ("rheumatoid arthritis of spine (M45.-)")

Nearby codes

• 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 (this code)
• 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