Is B33 a billable code?
No. B33 is a header code that groups 10 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
B33: Other viral diseases, not elsewhere classified
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
B33 groups related diagnoses under other viral diseases, not elsewhere classified. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under B33
- B33.0Epidemic myalgia
- B33.1Ross River disease
- B33.20Viral carditis, unspecified
- B33.21Viral endocarditis
- B33.22Viral myocarditis
- B33.23Viral pericarditis
- B33.24Viral cardiomyopathy
- B33.3Retrovirus infections, not elsewhere classified
- B33.4Hantavirus (cardio)-pulmonary syndrome [HPS] [HCPS]
- B33.8Other specified viral diseases
B33 questions
What does B33 mean?
B33 is the ICD-10-CM code for Other viral diseases, not elsewhere classified. It is in chapter 1, Certain infectious and parasitic diseases (A00-B99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.