A42.8
Non-Billable

Other forms of actinomycosis

Non-Billable / Non-Specific Code

What is Other forms of actinomycosis?

ICD-10-CM A42.8 is the diagnosis code for Other forms of actinomycosis. This code falls under the section "Other bacterial diseases" within Chapter 1 — Certain infectious and parasitic diseases (A00-B99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

Coding Guidelines for A42.8

Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.

ICD-10-CM Code Hierarchy

Understanding where A42.8 sits in the ICD-10-CM classification helps ensure proper coding:

Current CodeA42.8 — Other forms of actinomycosis
Sub-Codes (3)
Sub-Codes 3 entries
A42.81Actinomycotic meningitisBillableA42.82Actinomycotic encephalitisBillableA42.89Other forms of actinomycosisBillable
Related Codes

Frequently Asked Questions

Is A42.8 a billable ICD-10-CM code?

No, A42.8 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does A42.8 mean?

A42.8 is the ICD-10-CM diagnosis code for "Other forms of actinomycosis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of A42.8?

The parent code of A42.8 is A42 ("Actinomycosis"). A42.8 provides a more specific classification within this category.

What section is A42.8 in?

A42.8 is located in Section A30-A49 — "Other bacterial diseases" within Chapter 1 of the ICD-10-CM Tabular List.

What are the sub-codes of A42.8?

A42.8 has 3 sub-code(s) that provide more specific detail: A42.81, A42.82, A42.89.

When should I use A42.8?

Use A42.8 when the patients documented diagnosis matches "Other forms of actinomycosis" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Other forms of actinomycosis?

The ICD-10-CM code for Other forms of actinomycosis is A42.8.

Can A42.8 be used for primary diagnosis?

No, A42.8 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is A42.8 in?

A42.8 is in Chapter 1 of the ICD-10-CM Tabular List.

Is A42.8 valid for 2026?

Yes, A42.8 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousA42.7Actinomycotic sepsisNext →A42.81Actinomycotic meningitis
Code Details
A42.8
Other forms of actinomycosis
Non-Billable / Non-Specific Code
1 — Certain infectious and parasitic diseases (A00-B99)
A30-A49 — Other bacterial diseases
2026 ICD-10-CM