A31

Non-billable

Infection 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

Excludes2 — not included here

Frequently asked questions

What is ICD-10 code A31?
A31 is the ICD-10-CM code for "Infection due to other mycobacteria". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A31 a billable code?
No — A31 is a non-billable header code. Use a more specific child code (such as A31.0) for billing.
What are the subcodes of A31?
A31 has 5 more specific child codes, including A31.0, A31.1, A31.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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