A39 – Meningococcal infection
ICD-10-CM 2027 diagnosis code · Other bacterial diseases
ICD-10-CM code
A39
- Code
A39(claims format:A39)- Description
- Meningococcal infection
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- A30-A49 Other bacterial diseases
Billable codes under A39
A39 is a header code and cannot be used on claims. Choose the most specific code:
- A39.0 – Meningococcal meningitisBillable
- A39.1 – Waterhouse-Friderichsen syndromeBillable
- A39.2 – Acute meningococcemiaBillable
- A39.3 – Chronic meningococcemiaBillable
- A39.4 – Meningococcemia, unspecifiedBillable
- A39.5 – Meningococcal heart diseaseHeader (more codes below)
- A39.8 – Other meningococcal infectionsHeader (more codes below)
- A39.9 – Meningococcal infection, unspecifiedBillable
Frequently asked questions
What is ICD-10 code A39?
A39 is the ICD-10-CM code for meningococcal infection, in the block A30-A49 (Other bacterial diseases).
Is A39 a billable code?
No. A39 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.