National case definition: Haemophilus influenzae non-b, invasive disease

Haemophilus influenzae non-b^{Footnote *}, invasive disease

Date of last revision/review: May 2008

National notification

Only confirmed cases of disease should be notified.

Type of surveillance

Routine case-by-case notification to the federal level

Enhanced case-by-case notification to International Circumpolar Surveillance in participating Northern regions

Enhanced, active case-by-case notification by paediatric tertiary care hospitals involved in the Immunization Monitoring Program, Active (IMPACT)

Case classification

Confirmed case

Clinical evidence of invasive disease (see section below) with laboratory confirmation of infection:

• isolation of H. influenzae (serotypes a, c, d, e, f, undifferentiated and non-typeable isolates) from a normally sterile site
  or
• isolation of H. influenzae (serotypes a, c, d, e, f, undifferentiated and non-typeable isolates) from the epiglottis in a person with epiglottitis

Clinical evidence

Clinical illness associated with invasive disease due to H. influenzae includes meningitis, bacteremia, epiglottitis, pneumonia, pericarditis, septic arthritis and empyema.

ICD code(s)

Note: ICD codes do not differentiate between b and non-b serotypes

ICD-10 code(s)

• A41.3 Septicaemia due to Haemophilus influenzae
• A49.2 H. influenzae infection, unspecified site
• B96.3 H. influenzae as cause of disease classified elsewhere
• G00.0 Meningitis due to Haemophilus influenzae
• J05.1 Acute epiglottitis
• J14 Pneumonia due to Haemophilus influenzae
• P23.6 Congenital pneumonia due to Haemophilus influenzae

ICD-9/ICD-9CM code(s)

• 038.41 Septicaemia due to Haemophilus influenzae
• 041.5 H. influenzae infection of unspecified site and in conditions classified elsewhere
• 320.0 Meningitis due to Haemophilus influenzae
• 464.3 Acute epiglottitis
• 482.2 Pneumonia due to Haemophilus influenzae

Comments

See Haemophilus influenzae serotype b, Invasive Disease.