B33.3 – Retrovirus infections, not elsewhere classified
ICD-10-CM 2027 diagnosis code · Other viral diseases
ICD-10-CM code
B33.3
- Code
B33.3(claims format:B333)- Description
- Retrovirus infections, not elsewhere classified
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- B25-B34 Other viral diseases
- Parent codes
- B33
Notes for B33.3
Applicable to:
- Retrovirus infection NOS
Index terms for B33.3
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in B33
Frequently asked questions
What is ICD-10 code B33.3?
B33.3 is the ICD-10-CM code for retrovirus infections, not elsewhere classified, in the block B25-B34 (Other viral diseases).
Is B33.3 a billable code?
Yes. B33.3 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does B33.3 belong to?
It belongs to category B33 – Other viral diseases, not elsewhere classified.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.