ICD-10-CM > A00-B99 > B25-B34 > B33 B33 Other viral diseases, not elsewhere classified Non-Billable/Non-Specific Codes B33.0Epidemic myalgiaB33.1Ross River diseaseB33.2Viral carditisB33.20Viral carditis, unspecifiedB33.21Viral endocarditisB33.22Viral myocarditisB33.23Viral pericarditisB33.24Viral cardiomyopathyB33.3Retrovirus infections, not elsewhere classifiedB33.4Hantavirus (cardio)-pulmonary syndrome [HPS] [HCPS]B33.8Other specified viral diseases