A31
Non-billableInfection due to other mycobacteria
A31 is the ICD-10-CM code for Infection due to other mycobacteria. It is a non-billable category code — use a more specific child code such as A31.0 for billing.
- Status
- Header (non-billable)
- Chapter
- A00-B99
- Subcodes
- 5
- Edition
- FY2026
A00-B99 Certain infectious and parasitic diseases
What this means — in plain language
MedlinePlus · NIHMycobacteria are a type of germ. There are many different kinds. The most common one causes tuberculosis . Another one causes leprosy. Still others cause infections that are called atypical mycobacterial infections. They aren't "typical" because they don't cause tuberculosis. But they can still harm people, especially people with other problems that affect their immunity, such as AIDS. Sometimes you can have these…
Read more about Mycobacterial Infections at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not 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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