M45.AB: Non-radiographic axial spondyloarthritis of multiple sites in spine
M45.AB is the billable ICD-10-CM diagnosis code for Non-radiographic axial spondyloarthritis of multiple sites in spine. 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.AB?
M45.AB is the ICD-10-CM diagnosis code for Non-radiographic axial spondyloarthritis of multiple sites in spine. It belongs to category M45 (Ankylosing spondylitis).
Is M45.AB a billable code?
Yes. M45.AB 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.AB belong to?
M45.AB 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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