Non-radiographic axial spondyloarthritis occipt-atlan-ax rgn

This code identifies a chronic inflammatory arthropathy primarily affecting the axial skeleton, specifically the occipito-atlanto-axial region, without definitive radiographic evidence of sacroiliitis or spinal damage. It is characterized by inflammatory back pain and stiffness in the neck and upper cervical spine, often associated with elevated inflammatory markers.

Use this code when documentation confirms a diagnosis of non-radiographic axial spondyloarthritis, with symptoms localized to the occipito-atlanto-axial region. This diagnosis is typically made based on clinical criteria, patient history, physical examination findings, and laboratory tests, in the absence of clear radiographic changes.

• Ensure documentation explicitly states "non-radiographic" and specifies the "occipito-atlanto-axial region."
• Do not confuse with codes for ankylosing spondylitis (M45.0-) which requires radiographic evidence of sacroiliitis.
• Consider co-reporting codes for associated symptoms or extra-articular manifestations if present and documented.