| B00 | Herpesviral [herpes simplex] infections |
| B00.0 | Eczema herpeticum |
| B00.1 | Herpesviral vesicular dermatitis |
| B00.2 | Herpesviral gingivostomatitis and pharyngotonsillitis |
| B00.3 | Herpesviral meningitis |
| B00.4 | Herpesviral encephalitis |
| B00.5 | Herpesviral ocular disease |
| B00.50 | Herpesviral ocular disease, unspecified |
| B00.51 | Herpesviral iridocyclitis |
| B00.52 | Herpesviral keratitis |
| B00.53 | Herpesviral conjunctivitis |
| B00.59 | Other herpesviral disease of eye |
| B00.7 | Disseminated herpesviral disease |
| B00.8 | Other forms of herpesviral infections |
| B00.81 | Herpesviral hepatitis |
| B00.82 | Herpes simplex myelitis |
| B00.89 | Other herpesviral infection |
| B00.9 | Herpesviral infection, unspecified |
| B01 | Varicella [chickenpox] |
| B01.0 | Varicella meningitis |
| B01.1 | Varicella encephalitis, myelitis and encephalomyelitis |
| B01.11 | Varicella encephalitis and encephalomyelitis |
| B01.12 | Varicella myelitis |
| B01.2 | Varicella pneumonia |
| B01.8 | Varicella with other complications |
| B01.81 | Varicella keratitis |
| B01.89 | Other varicella complications |
| B01.9 | Varicella without complication |
| B02 | Zoster [herpes zoster] |
| B02.0 | Zoster encephalitis |
| B02.1 | Zoster meningitis |
| B02.2 | Zoster with other nervous system involvement |
| B02.21 | Postherpetic geniculate ganglionitis |
| B02.22 | Postherpetic trigeminal neuralgia |
| B02.23 | Postherpetic polyneuropathy |
| B02.24 | Postherpetic myelitis |
| B02.29 | Other postherpetic nervous system involvement |
| B02.3 | Zoster ocular disease |
| B02.30 | Zoster ocular disease, unspecified |
| B02.31 | Zoster conjunctivitis |
| B02.32 | Zoster iridocyclitis |
| B02.33 | Zoster keratitis |
| B02.34 | Zoster scleritis |
| B02.39 | Other herpes zoster eye disease |
| B02.7 | Disseminated zoster |
| B02.8 | Zoster with other complications |
| B02.9 | Zoster without complications |
| B03 | Smallpox |
| B04 | Monkeypox |
| B05 | Measles |
| B05.0 | Measles complicated by encephalitis |
| B05.1 | Measles complicated by meningitis |
| B05.2 | Measles complicated by pneumonia |
| B05.3 | Measles complicated by otitis media |
| B05.4 | Measles with intestinal complications |
| B05.8 | Measles with other complications |
| B05.81 | Measles keratitis and keratoconjunctivitis |
| B05.89 | Other measles complications |
| B05.9 | Measles without complication |
| B06 | Rubella [German measles] |
| B06.0 | Rubella with neurological complications |
| B06.00 | Rubella with neurological complication, unspecified |
| B06.01 | Rubella encephalitis |
| B06.02 | Rubella meningitis |
| B06.09 | Other neurological complications of rubella |
| B06.8 | Rubella with other complications |
| B06.81 | Rubella pneumonia |
| B06.82 | Rubella arthritis |
| B06.89 | Other rubella complications |
| B06.9 | Rubella without complication |
| B07 | Viral warts |
| B07.0 | Plantar wart |
| B07.8 | Other viral warts |
| B07.9 | Viral wart, unspecified |
| B08 | Other viral infections characterized by skin and mucous membrane lesions, not elsewhere classified |
| B08.0 | Other orthopoxvirus infections |
| B08.01 | Cowpox and vaccinia not from vaccine |
| B08.010 | Cowpox |
| B08.011 | Vaccinia not from vaccine |
| B08.02 | Orf virus disease |
| B08.03 | Pseudocowpox [milker's node] |
| B08.04 | Paravaccinia, unspecified |
| B08.09 | Other orthopoxvirus infections |
| B08.1 | Molluscum contagiosum |
| B08.2 | Exanthema subitum [sixth disease] |
| B08.20 | Exanthema subitum [sixth disease], unspecified |
| B08.21 | Exanthema subitum [sixth disease] due to human herpesvirus 6 |
| B08.22 | Exanthema subitum [sixth disease] due to human herpesvirus 7 |
| B08.3 | Erythema infectiosum [fifth disease] |
| B08.4 | Enteroviral vesicular stomatitis with exanthem |
| B08.5 | Enteroviral vesicular pharyngitis |
| B08.6 | Parapoxvirus infections |
| B08.60 | Parapoxvirus infection, unspecified |
| B08.61 | Bovine stomatitis |
| B08.62 | Sealpox |
| B08.69 | Other parapoxvirus infections |
| B08.7 | Yatapoxvirus infections |
| B08.70 | Yatapoxvirus infection, unspecified |
| B08.71 | Tanapox virus disease |
| B08.72 | Yaba pox virus disease |
| B08.79 | Other yatapoxvirus infections |
| B08.8 | Other specified viral infections characterized by skin and mucous membrane lesions |
| B09 | Unspecified viral infection characterized by skin and mucous membrane lesions |
| B10 | Other human herpesviruses |
| B10.0 | Other human herpesvirus encephalitis |
| B10.01 | Human herpesvirus 6 encephalitis |
| B10.09 | Other human herpesvirus encephalitis |
| B10.8 | Other human herpesvirus infection |
| B10.81 | Human herpesvirus 6 infection |
| B10.82 | Human herpesvirus 7 infection |
| B10.89 | Other human herpesvirus infection |
| B15 | Acute hepatitis A |
| B15.0 | Hepatitis A with hepatic coma |
| B15.9 | Hepatitis A without hepatic coma |
| B16 | Acute hepatitis B |
| B16.0 | Acute hepatitis B with delta-agent with hepatic coma |
| B16.1 | Acute hepatitis B with delta-agent without hepatic coma |
| B16.2 | Acute hepatitis B without delta-agent with hepatic coma |
| B16.9 | Acute hepatitis B without delta-agent and without hepatic coma |
| B17 | Other acute viral hepatitis |
| B17.0 | Acute delta-(super) infection of hepatitis B carrier |
| B17.1 | Acute hepatitis C |
| B17.10 | Acute hepatitis C without hepatic coma |
| B17.11 | Acute hepatitis C with hepatic coma |
| B17.2 | Acute hepatitis E |
| B17.8 | Other specified acute viral hepatitis |
| B17.9 | Acute viral hepatitis, unspecified |
| B18 | Chronic viral hepatitis |
| B18.0 | Chronic viral hepatitis B with delta-agent |
| B18.1 | Chronic viral hepatitis B without delta-agent |
| B18.2 | Chronic viral hepatitis C |
| B18.8 | Other chronic viral hepatitis |
| B18.9 | Chronic viral hepatitis, unspecified |
| B19 | Unspecified viral hepatitis |
| B19.0 | Unspecified viral hepatitis with hepatic coma |
| B19.1 | Unspecified viral hepatitis B |
| B19.10 | Unspecified viral hepatitis B without hepatic coma |
| B19.11 | Unspecified viral hepatitis B with hepatic coma |
| B19.2 | Unspecified viral hepatitis C |
| B19.20 | Unspecified viral hepatitis C without hepatic coma |
| B19.21 | Unspecified viral hepatitis C with hepatic coma |
| B19.9 | Unspecified viral hepatitis without hepatic coma |
| B20 | Human immunodeficiency virus [HIV] disease |
| B25 | Cytomegaloviral disease |
| B25.0 | Cytomegaloviral pneumonitis |
| B25.1 | Cytomegaloviral hepatitis |
| B25.2 | Cytomegaloviral pancreatitis |
| B25.8 | Other cytomegaloviral diseases |
| B25.9 | Cytomegaloviral disease, unspecified |
| B26 | Mumps |
| B26.0 | Mumps orchitis |
| B26.1 | Mumps meningitis |
| B26.2 | Mumps encephalitis |
| B26.3 | Mumps pancreatitis |
| B26.8 | Mumps with other complications |
| B26.81 | Mumps hepatitis |
| B26.82 | Mumps myocarditis |
| B26.83 | Mumps nephritis |
| B26.84 | Mumps polyneuropathy |
| B26.85 | Mumps arthritis |
| B26.89 | Other mumps complications |
| B26.9 | Mumps without complication |
| B27 | Infectious mononucleosis |
| B27.0 | Gammaherpesviral mononucleosis |
| B27.00 | Gammaherpesviral mononucleosis without complication |
| B27.01 | Gammaherpesviral mononucleosis with polyneuropathy |
| B27.02 | Gammaherpesviral mononucleosis with meningitis |
| B27.09 | Gammaherpesviral mononucleosis with other complications |
| B27.1 | Cytomegaloviral mononucleosis |
| B27.10 | Cytomegaloviral mononucleosis without complications |
| B27.11 | Cytomegaloviral mononucleosis with polyneuropathy |
| B27.12 | Cytomegaloviral mononucleosis with meningitis |
| B27.19 | Cytomegaloviral mononucleosis with other complication |
| B27.8 | Other infectious mononucleosis |
| B27.80 | Other infectious mononucleosis without complication |
| B27.81 | Other infectious mononucleosis with polyneuropathy |
| B27.82 | Other infectious mononucleosis with meningitis |
| B27.89 | Other infectious mononucleosis with other complication |
| B27.9 | Infectious mononucleosis, unspecified |
| B27.90 | Infectious mononucleosis, unspecified without complication |
| B27.91 | Infectious mononucleosis, unspecified with polyneuropathy |
| B27.92 | Infectious mononucleosis, unspecified with meningitis |
| B27.99 | Infectious mononucleosis, unspecified with other complication |
| B30 | Viral conjunctivitis |
| B30.0 | Keratoconjunctivitis due to adenovirus |
| B30.1 | Conjunctivitis due to adenovirus |
| B30.2 | Viral pharyngoconjunctivitis |
| B30.3 | Acute epidemic hemorrhagic conjunctivitis (enteroviral) |
| B30.8 | Other viral conjunctivitis |
| B30.9 | Viral conjunctivitis, unspecified |
| B33 | Other viral diseases, not elsewhere classified |
| B33.0 | Epidemic myalgia |
| B33.1 | Ross River disease |
| B33.2 | Viral carditis |
| B33.20 | Viral carditis, unspecified |
| B33.21 | Viral endocarditis |
| B33.22 | Viral myocarditis |
| B33.23 | Viral pericarditis |
| B33.24 | Viral cardiomyopathy |
| B33.3 | Retrovirus infections, not elsewhere classified |
| B33.4 | Hantavirus (cardio)-pulmonary syndrome [HPS] [HCPS] |
| B33.8 | Other specified viral diseases |
| B34 | Viral infection of unspecified site |
| B34.0 | Adenovirus infection, unspecified |
| B34.1 | Enterovirus infection, unspecified |
| B34.2 | Coronavirus infection, unspecified |
| B34.3 | Parvovirus infection, unspecified |
| B34.4 | Papovavirus infection, unspecified |
| B34.8 | Other viral infections of unspecified site |
| B34.9 | Viral infection, unspecified |