M45.A3: Non-radiographic axial spondyloarthritis of cervicothoracic region
M45.A3 is the billable ICD-10-CM diagnosis code for Non-radiographic axial spondyloarthritis of cervicothoracic region. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code M45.A3?
M45.A3 is the ICD-10-CM diagnosis code for Non-radiographic axial spondyloarthritis of cervicothoracic region. It belongs to category M45 (Ankylosing spondylitis).
Is M45.A3 a billable code?
Yes. M45.A3 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does M45.A3 belong to?
M45.A3 is part of ICD-10-CM category M45 — Ankylosing spondylitis, which has 40 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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