Non-radiographic axial spondyloarthritis mult site in spine

This code describes non-radiographic axial spondyloarthritis (nr-axSpA) affecting multiple segments of the spine. It signifies a chronic inflammatory condition primarily impacting the axial skeleton, where definitive radiographic evidence of sacroiliitis is absent, but clinical signs and symptoms, often supported by MRI findings of inflammation, are present.

Use this code when documentation confirms a diagnosis of non-radiographic axial spondyloarthritis with involvement across several spinal regions. This typically includes patients presenting with chronic inflammatory back pain, positive HLA-B27 status, elevated inflammatory markers, and MRI evidence of sacroiliac joint inflammation, but without clear radiographic changes.

• Ensure documentation explicitly states "non-radiographic" and "multiple sites" within the spine.
• Distinguish from ankylosing spondylitis (AS) where radiographic sacroiliitis is present.
• Consider sequencing with codes for associated symptoms or complications, such as inflammatory bowel disease or uveitis, if present.