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A18

Non-billable

Tuberculosis of other organs

A18 is the ICD-10-CM code for Tuberculosis of other organs. It is a non-billable category code — use a more specific child code such as A18.0 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Subcodes
9
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code A18?
A18 is the ICD-10-CM code for "Tuberculosis of other organs". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A18 a billable code?
No — A18 is a non-billable header code. Use a more specific child code (such as A18.0) for billing.
What are the subcodes of A18?
A18 has 9 more specific child codes, including A18.0, A18.1, A18.2.

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

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