Under ICD-10, B33 denotes 'Other viral diseases,' an official classification entry reserved for defining the coding category of viral illnesses not classified under specific disease codes [1]. It functions as a residual taxonomic entity rather than a clinically characterized disease [1].
Disease overview
Evidence-backed information EN 1/5 applicable sections · ZH 1/5 applicable sections Updated Oct 23, 2026
The World Health Organization's ICD-10 assigns code B33 to a residual classification entity termed 'Other viral diseases,' used solely to categorize viral conditions not elsewhere classified [1]. This classification scope does not describe a single disease but serves as a taxonomic boundary within viral disease coding [1].
Read the full clinical and epidemiological profile 2
- 1 WHO ICD-10. ICD-10 B33: Other viral diseases [Internet]. cited 23 Oct 2026. Available from: https://icd.who.int/browse10/2019/en#/B33
- B33
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