Chapter I

Certain infectious and parasitic diseases

Other viral diseases

B25 Cytomegaloviral disease
Excludes: congenital cytomegalovirus infection ( P35.1 )
cytomegaloviral mononucleosis ( B27.1 )
B25.0+ Cytomegaloviral pneumonitis ( J17.1* )
B25.1+ Cytomegaloviral hepatitis ( K77.0* )
B25.2+ Cytomegaloviral pancreatitis ( K87.1* )
B25.8 Other cytomegaloviral diseases
Cytomegaloviral chorioretinitis+ (H32.0*)
B25.9 Cytomegaloviral disease, unspecified

B26 Mumps
Includes: parotitis:
· epidemic
· infectious
B26.0+ Mumps orchitis ( N51.1* )
B26.1+ Mumps meningitis ( G02.0* )
B26.2+ Mumps encephalitis ( G05.1* )
B26.3+ Mumps pancreatitis ( K87.1* )
B26.8 Mumps with other complications
· arthritis+ ( M01.5* )
· myocarditis+ ( I41.1* )
· nephritis+ ( N08.0* )
· polyneuropathy+ ( G63.0* )
B26.9 Mumps without complication
· parotitis NOS

B27 Infectious mononucleosis
Includes: glandular fever
monocytic angina
Pfeiffer's disease
B27.0 Gammaherpesviral mononucleosis
Mononucleosis due to Epstein-Barr virus
B27.1 Cytomegaloviral mononucleosis
B27.8 Other infectious mononucleosis
B27.9 Infectious mononucleosis, unspecified

B30 Viral conjunctivitis
Excludes: ocular disease:
· herpesviral [herpes simplex] ( B00.5 )
· zoster ( B02.3 )
B30.0+ Keratoconjunctivitis due to adenovirus ( H19.2* )
Epidemic keratoconjunctivitis
Shipyard eye
B30.1+ Conjunctivitis due to adenovirus ( H13.1* )
Acute adenoviral follicular conjunctivitis
Swimming-pool conjunctivitis
B30.2 Viral pharyngoconjunctivitis
B30.3+ Acute epidemic haemorrhagic conjunctivitis (enteroviral) ( H13.1* )
Conjunctivitis due to:
· coxsackievirus 24
· enterovirus 70
Haemorrhagic conjunctivitis (acute)(epidemic)
B30.8+ Other viral conjunctivitis ( H13.1* )
Newcastle conjunctivitis
B30.9 Viral conjunctivitis, unspecified

B33 Other viral diseases, not elsewhere classified
B33.0 Epidemic myalgia
Bornholm disease
B33.1 Ross River disease
Epidemic polyarthritis and exanthema
Ross River fever
B33.2 Viral carditis
B33.3 Retrovirus infections, not elsewhere classified
Retrovirus infection NOS
B33.4+ Hantavirus (cardio-)pulmonary syndrome [HPS] [HCPS] ( J17.1* )
Hantavirus disease with pulmonary manifestations
Sin Nombre virus disease
Use additional code (N17.9), if desired, to identify any renal failure associated with HPS caused by the Andes, Bayou and Black Creek Canal hantavirus aetiologies.
Excludes: haemorrhagic fever with renal manifestations ( A98.5 )
B33.8 Other specified viral diseases

B34 Viral infection of unspecified site
Excludes: cytomegaloviral disease NOS ( B25.9 )
herpesvirus [herpes simplex] infection NOS ( B00.9 )
retrovirus infection NOS ( B33.3 )
viral agents as the cause of diseases classified to other chapters ( B97.- )
B34.0 Adenovirus infection, unspecified
B34.1 Enterovirus infection, unspecified
Coxsackievirus infection NOS
Echovirus infection NOS
B34.2 Coronavirus infection, unspecified
Excludes: severe acute respiratory syndrome [SARS] ( U04.9 )
B34.3 Parvovirus infection, unspecified
B34.4 Papovavirus infection, unspecified
B34.8 Other viral infections of unspecified site
B34.9 Viral infection, unspecified
Viraemia NOS