ICD-10-CM · FY 2026 APRIL UPDATE
B33
Other viral diseases, not elsewhere classified
Diagnosis reference
Nonbillable categoryThis entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.
Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification
Related entries
Up to 30 descendants in this category
| CODE | DESCRIPTION | TYPE |
|---|---|---|
| B33.0 | Epidemic myalgia | Billable |
| B33.1 | Ross River disease | Billable |
| B33.2 | Viral carditis | Category |
| B33.20 | Viral carditis, unspecified | Billable |
| B33.21 | Viral endocarditis | Billable |
| B33.22 | Viral myocarditis | Billable |
| B33.23 | Viral pericarditis | Billable |
| B33.24 | Viral cardiomyopathy | Billable |
| B33.3 | Retrovirus infections, not elsewhere classified | Billable |
| B33.4 | Hantavirus (cardio)-pulmonary syndrome [HPS] [HCPS] | Billable |
| B33.8 | Other specified viral diseases | Billable |
Use the complete reference
This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.
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