A43

Non-billable

Nocardiosis

A43 is the ICD-10-CM code for Nocardiosis. It is a non-billable category code — use a more specific child code such as A43.0 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Subcodes
4
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code A43?
A43 is the ICD-10-CM code for "Nocardiosis". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A43 a billable code?
No — A43 is a non-billable header code. Use a more specific child code (such as A43.0) for billing.
What are the subcodes of A43?
A43 has 4 more specific child codes, including A43.0, A43.1, A43.8.

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

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