B33 Other viral diseases, not elsewhere classified

Category / Non-billable header 11 subcodes

Block: Other viral diseases (B25-B34)

Subcodes

Each subcode links to a detail page with full clinical annotations.

Code Description Billable
B33..0 Epidemic myalgia Yes
B33..1 Ross River disease Yes
B33..2 Viral carditis No
B33..20 Viral carditis, unspecified Yes
B33..21 Viral endocarditis Yes
B33..22 Viral myocarditis Yes
B33..23 Viral pericarditis Yes
B33..24 Viral cardiomyopathy Yes
B33..3 Retrovirus infections, not elsewhere classified Yes
B33..4 Hantavirus (cardio)-pulmonary syndrome [HPS] [HCPS] Yes
B33..8 Other specified viral diseases Yes

Last reviewed: September 2026