A42
Non-billableActinomycosis
A42 is the ICD-10-CM code for Actinomycosis. It is a non-billable category code — use a more specific child code such as A42.0 for billing.
- Status
- Header (non-billable)
- Chapter
- A00-B99
- Subcodes
- 6
- Edition
- FY2026
A00-B99 Certain infectious and parasitic diseases
Excludes1 — not coded here
- •actinomycetoma (B47.1)
Frequently asked questions
- What is ICD-10 code A42?
- A42 is the ICD-10-CM code for "Actinomycosis". It falls under A00-B99 Certain infectious and parasitic diseases.
- Is A42 a billable code?
- No — A42 is a non-billable header code. Use a more specific child code (such as A42.0) for billing.
- What is excluded from A42?
- Excludes1 (not coded here): actinomycetoma (B47.1).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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