A39
Non-Billable

Meningococcal infection

Non-Billable / Non-Specific Code

What is Meningococcal infection?

ICD-10-CM A39 is the diagnosis code for Meningococcal infection. 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 A39

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 A39 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 8 entries
A39.0Meningococcal meningitisBillableA39.1Waterhouse-Friderichsen syndromeBillableA39.2Acute meningococcemiaBillableA39.3Chronic meningococcemiaBillableA39.4Meningococcemia, unspecifiedBillableA39.5Meningococcal heart diseaseNon-BillableA39.50Meningococcal carditis, unspecifiedBillableA39.51Meningococcal endocarditisBillableA39.52Meningococcal myocarditisBillableA39.53Meningococcal pericarditisBillableA39.8Other meningococcal infectionsNon-BillableA39.81Meningococcal encephalitisBillableA39.82Meningococcal retrobulbar neuritisBillableA39.83Meningococcal arthritisBillableA39.84Postmeningococcal arthritisBillableA39.89Other meningococcal infectionsBillableA39.9Meningococcal infection, unspecifiedBillable
Related Codes

Frequently Asked Questions

Is A39 a billable ICD-10-CM code?

No, A39 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does A39 mean?

A39 is the ICD-10-CM diagnosis code for "Meningococcal infection". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What section is A39 in?

A39 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 A39?

A39 has 8 sub-code(s) that provide more specific detail: A39.0, A39.1, A39.2, A39.3, A39.4 and more.

When should I use A39?

Use A39 when the patients documented diagnosis matches "Meningococcal infection" 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 Meningococcal infection?

The ICD-10-CM code for Meningococcal infection is A39.

Can A39 be used for primary diagnosis?

No, A39 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is A39 in?

A39 is in Chapter 1 of the ICD-10-CM Tabular List.

Is A39 valid for 2026?

Yes, A39 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousA38.9Scarlet fever, uncomplicatedNext →A39.0Meningococcal meningitis
Code Details
A39
Meningococcal infection
Non-Billable / Non-Specific Code
1 — Certain infectious and parasitic diseases (A00-B99)
A30-A49 — Other bacterial diseases
2026 ICD-10-CM