2026 ICD-10-CM Diagnosis Code J03.80Acute tonsillitis due to other specified organisms
ICD-10-CM Codes›J00–J99›J00-J06›J03
- Billable — Valid for Submission
- Not Chronic
J03.80 is a billable ICD-10-CM diagnosis code for acute tonsillitis due to other specified organisms. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 11 through 13, 152 through 153. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Acute and chronic tonsillitis.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute bacterial pharyngitis
- Acute bacterial tonsillitis
- Acute pneumococcal pharyngitis
- Acute pneumococcal tonsillitis
- Acute staphylococcal pharyngitis
- Acute staphylococcal tonsillitis
- Acute streptococcal pharyngitis
- Acute tonsillitis caused by Streptococcus
- Fusobacterial necrotizing tonsillitis
- Gangrenous pharyngitis
- Gangrenous tonsillitis
- Infection caused by Fusobacterium
- Necrobacillosis
- Pneumococcal pharyngitis
- Pneumococcal tonsillitis
- Staphylococcal pharyngitis
- Staphylococcal tonsillitis
- Streptococcal sore throat
- Streptococcal tonsillitis
- Tonsillitis caused by Gram negative bacteria
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
specified organism NEC J03.80
staphylococcal J03.80
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Tonsillitis
Tonsils are lumps of tissue at the back of the throat. There are two of them, one on each side. Along with the adenoids, tonsils are part of the lymphatic system. The lymphatic system clears away infection and keeps body fluids in balance. Tonsils and adenoids work by trapping the germs coming in through the mouth and nose.
The full article covers:
- What are tonsils?
- What is tonsillitis?
- What causes tonsillitis?
- Who is at risk for tonsillitis?
- Is tonsillitis contagious?
- What are the symptoms of tonsillitis?
- When does my child need to see a health care provider for tonsillitis?
- How is tonsillitis diagnosed?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert J03.80 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About J03.80Overview
What is the ICD-10 code for acute tonsillitis due to other specified organisms?
The ICD-10-CM code for acute tonsillitis due to other specified organisms is J03.80 (sometimes written as J0380). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is J03.80 (Acute tonsillitis due to other specified organisms) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report acute tonsillitis due to other specified organisms on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does J03.80 group to?
When acute tonsillitis due to other specified organisms is the principal diagnosis on an inpatient stay, it groups to MS-DRG 11, 12, 13, 152, 153, with relative weights from 0.7382 to 5.4541 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of J03.80?
Under the General Equivalence Mappings, acute tonsillitis due to other specified organisms converts to ICD-9-CM 463 (acute tonsillitis). The mapping is approximate, so confirm the match fits the documentation.
