M45.A
Non-billableNon-radiographic axial spondyloarthritis
M45.A is the ICD-10-CM code for Non-radiographic axial spondyloarthritis. It is a non-billable category code — use a more specific child code such as M45.A0 for billing.
M00-M99 Diseases of the musculoskeletal system and connective tissue
What this means — in plain language
MedlinePlus · NIHWhat is ankylosing spondylitis? Ankylosing spondylitis (AS) is a type of arthritis of the spine. It causes inflammation (swelling) between your vertebrae (the bones that make up your spine) and the joints between your spine and pelvis. AS inflammation can cause stiffness and make it difficult to move and bend. Symptoms of AS can range from mild to severe back pain. Over time, AS can fuse (grow together) your…
Read more about Ankylosing Spondylitis at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Medications indicated for this condition
FDA labeling- HydrocortisoneCorticosteroid [EPC]›
- AdalimumabTumor Necrosis Factor Blocker [EPC]›
- DexamethasoneCorticosteroid [EPC]›
- NaproxenNonsteroidal Anti-inflammatory Drug [EPC]›
- CelecoxibNonsteroidal Anti-inflammatory Drug [EPC]›
- IndomethacinNonsteroidal Anti-inflammatory Drug [EPC]›
- TofacitinibJanus Kinase Inhibitor [EPC]›
- InfliximabTumor Necrosis Factor Blocker [EPC]›
- Diclofenac Sodium, Capsaicin›
- SulindacNonsteroidal Anti-inflammatory Drug [EPC]›
- Bimekizumab›
- CorticotropinAdrenocorticotropic Hormone [EPC]›
Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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