B00-B09
- Viral infections characterized by skin and mucous membrane lesions (B00-B09)
B10
- Other human herpesviruses (B10)
B15-B19
- Viral hepatitis (B15-B19)
- sequelae of viral hepatitis (B94.2)
- cytomegaloviral hepatitis (B25.1)
- herpesviral [herpes simplex] hepatitis (B00.81)
B20
- Human immunodeficiency virus [HIV] disease (B20)
B25-B34
- Other viral diseases (B25-B34)
B35-B49
- hypersensitivity pneumonitis due to organic dust (J67.-)
- mycosis fungoides (C84.0-)
B50-B64
- Protozoal diseases (B50-B64)
- amebiasis (A06.-)
- other protozoal intestinal diseases (A07.-)
B65-B83
B65 B66 B67 B68 B69 B70 B71 B72 B73 B74 B75 B76 B77 B78 B79 B80 B81 B82 B83B85-B89
- Pediculosis, acariasis and other infestations (B85-B89)
B90-B94
- Sequelae of infectious and parasitic diseases (B90-B94)
- condition resulting from (sequela) the infectious or parasitic disease
- Categories B90-B94 are to be used to indicate conditions in categories A00-B89 as the cause of sequelae, which are themselves classified elsewhere. The 'sequelae' include conditions specified as such; they also include residuals of diseases classifiable to the above categories if there is evidence that the disease itself is no longer present. Codes from these categories are not to be used for chronic infections. Code chronic current infections to active infectious disease as appropriate.
B95-B97
- Bacterial and viral infectious agents (B95-B97)
- These categories are provided for use as supplementary or additional codes to identify the infectious agent(s) in diseases classified elsewhere.
B99
- Other infectious diseases (B99)