Current
M45 — Ankylosing spondylitis
Part of Chapter 13: Diseases of the musculoskeletal system and connective tissue , block Spondylopathies (M45-M49) .
Official Notes
Child Codes
- M45.0 Ankylosing spondylitis of multiple sites in spine Billable
- M45.1 Ankylosing spondylitis of occipito-atlanto-axial region Billable
- M45.2 Ankylosing spondylitis of cervical region Billable
- M45.3 Ankylosing spondylitis of cervicothoracic region Billable
- M45.4 Ankylosing spondylitis of thoracic region Billable
- M45.5 Ankylosing spondylitis of thoracolumbar region Billable
- M45.6 Ankylosing spondylitis lumbar region Billable
- M45.7 Ankylosing spondylitis of lumbosacral region Billable
- M45.8 Ankylosing spondylitis sacral and sacrococcygeal region Billable
- M45.9 Ankylosing spondylitis of unspecified sites in spine Billable
- M45.A Non-radiographic axial spondyloarthritis Has subcodes
Referenced By
Official notes on these codes cite M45.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS