M46.21
BillableOsteomyelitis of vertebra, occipito-atlanto-axial region
M46.21 is the ICD-10-CM code for Osteomyelitis of vertebra, occipito-atlanto-axial region. It is a billable, specific code valid for reimbursement.
M00-M99 Diseases of the musculoskeletal system and connective tissue
What this means — in plain language
MedlinePlus · NIHLike other parts of the body, bones can get infected. The infections are usually bacterial, but can also be fungal. They may spread to the bone from nearby skin or muscles, or from another part of the body through the bloodstream. People who are at risk for bone infections include those with diabetes , poor circulation, or recent injury to the bone. You may also be at risk if you are having hemodialysis . Symptoms…
Read more about Bone Infections at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Medications indicated for this condition
FDA labeling- Bimekizumab›
- IxekizumabInterleukin-17A Antagonist [EPC]›
- SecukinumabInterleukin-17A Antagonist [EPC]›
- UpadacitinibJanus Kinase Inhibitor [EPC]›
Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Frequently asked questions
- What is ICD-10 code M46.21?
- M46.21 is the ICD-10-CM code for "Osteomyelitis of vertebra, occipito-atlanto-axial region". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
- Is M46.21 a billable code?
- Yes — M46.21 is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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