A39.1Billable
Waterhouse-Friderichsen syndrome
- Chapter
- 1. Certain infectious and parasitic diseases
- Category
- A39
- Effective date
- October 1, 2026
Related codes in category A39
A39Meningococcal infectionA39.0Meningococcal meningitisYesA39.2Acute meningococcemiaYesA39.3Chronic meningococcemiaYesA39.4Meningococcemia, unspecifiedYesA39.5Meningococcal heart diseaseA39.50Meningococcal carditis, unspecifiedYesA39.51Meningococcal endocarditisYesA39.52Meningococcal myocarditisYesA39.53Meningococcal pericarditisYesA39.8Other meningococcal infectionsA39.81Meningococcal encephalitisYes
Frequently asked questions
What is ICD-10 code A39.1?
A39.1 is an ICD-10-CM diagnosis code for Waterhouse-Friderichsen syndrome.
Is A39.1 a billable code?
Yes. A39.1 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is A39.1 in?
A39.1 falls under Chapter 1: Certain infectious and parasitic diseases.
When did A39.1 become effective?
A39.1 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to A39.1?
A39.1 belongs to category A39, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.