ICD-10-CM · Chapter 1 · A00–B99
B33.3
Retrovirus infections, not elsewhere classified
Certain infectious and parasitic diseases
Quick facts
- Code
- B33.3
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 1 — Certain infectious and parasitic diseases
- Category
- B33 — Other viral diseases, not elsewhere classified
- Specificity
- 4 characters
How coders use this code
ICD-10-CM B33.3 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of retrovirus infections, not elsewhere classified. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in B33
- B33Other viral diseases, not elsewhere classified
- B33.0Epidemic myalgia
- B33.1Ross River disease
- B33.2Viral carditis
- B33.20Viral carditis, unspecified
- B33.21Viral endocarditis
- B33.22Viral myocarditis
- B33.23Viral pericarditis
- B33.24Viral cardiomyopathy
- B33.4Hantavirus (cardio)-pulmonary syndrome [HPS] [HCPS]
- B33.8Other specified viral diseases
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