ICD-10-CM
ICD-10 code for Meningococcus, meningococcal adrenalitis, hemorrhagic: A39.1
The ICD-10-CM index points "Meningococcus, meningococcal adrenalitis, hemorrhagic" to A39.1, Waterhouse-Friderichsen syndrome. A39.1 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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More specific codes in A39
A header groups codes and is not billed. A billable code is one you can report.
- A39Meningococcal infectionHeader
- A39.0Meningococcal meningitisBillable
- A39.1Waterhouse-Friderichsen syndromeBillable
- A39.2Acute meningococcemiaBillable
- A39.3Chronic meningococcemiaBillable
- A39.4Meningococcemia, unspecifiedBillable
- A39.5Meningococcal heart diseaseHeader
- A39.50Meningococcal carditis, unspecifiedBillable
- A39.51Meningococcal endocarditisBillable
- A39.52Meningococcal myocarditisBillable
- A39.53Meningococcal pericarditisBillable
- A39.8Other meningococcal infectionsHeader
- A39.81Meningococcal encephalitisBillable
- A39.82Meningococcal retrobulbar neuritisBillable
- A39.83Meningococcal arthritisBillable
- A39.84Postmeningococcal arthritisBillable
- A39.89Other meningococcal infectionsBillable
- A39.9Meningococcal infection, unspecifiedBillable
Related conditions
Related pages
- A39.1 code detailsNotes, nearby codes, CMS-HCC group
- Category A39Every code under it
- Chapter 1Certain infectious and parasitic diseases
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Meningococcus, meningococcal adrenalitis, hemorrhagic?
The ICD-10-CM index points "Meningococcus, meningococcal adrenalitis, hemorrhagic" to A39.1, Waterhouse-Friderichsen syndrome. A39.1 is a billable code.
Is A39.1 billable?
Yes. A39.1 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What chapter is A39.1 in?
Chapter 1. Certain infectious and parasitic diseases.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.