J03.9Header code — not billable
Acute tonsillitis, unspecified
- Chapter
- 10. Diseases of the respiratory system
- Category
- J03
- Effective date
- October 1, 2026
Related codes in category J03
J03Acute tonsillitisJ03.0Streptococcal tonsillitisJ03.00Acute streptococcal tonsillitis, unspecifiedYesJ03.01Acute recurrent streptococcal tonsillitisYesJ03.8Acute tonsillitis due to other specified organismsJ03.80Acute tonsillitis due to other specified organismsYesJ03.81Acute recurrent tonsillitis due to other specified organismsYesJ03.90Acute tonsillitis, unspecifiedYesJ03.91Acute recurrent tonsillitis, unspecifiedYes
Frequently asked questions
What is ICD-10 code J03.9?
J03.9 is an ICD-10-CM diagnosis code for Acute tonsillitis, unspecified.
Is J03.9 a billable code?
No. J03.9 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is J03.9 in?
J03.9 falls under Chapter 10: Diseases of the respiratory system.
When did J03.9 become effective?
J03.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to J03.9?
J03.9 belongs to category J03, which includes 9 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.