ARCHIVED - Hepatitis B

 


Nationally notifiable since 1969

1.0 National Notification

The following cases of disease should be notified:

  • Confirmed acute
  • Although it is recognized that chronic hepatitis B infections are not reportable in all provinces and territories, where possible, chronic and unspecified infections should be notified to the national level.

2.0 Type of Surveillance

Routine case-by-case notification to the federal level

3.0 Case Classification

3.1 Acute case

3.1.1 Confirmed case

  • Hepatitis B surface antigen (HBsAg) and immunoglobulin M antibody to hepatitis B core antigen (anti-HBcIgM) positive in the context of a compatible clinical history or probable exposure
    OR
  • Clearance of HBsAg in a person who was documented to be HBsAg positive within the last six months in the context of a compatible clinical history or probable exposure

3.1.2 Probable case

Acute clinical illness in a person who is epidemiologically linked to a confirmed case

3.2 Chronic carrier

3.2.1 Confirmed case

  • HBsAg positive for more than 6 months
    OR
  • Detection of HBsAg in the documented absence of anti-HBc-IgM
    OR
  • Detection of HBV DNA for more than 6 months

3.3 Unspecified

3.3.1 Confirmed case

  • Does not fit the criteria for either 3.1 or 3.2 above
    AND
  • HBsAg positive
    OR
  • Detection of HBV DNA

4.0 Laboratory Comments

Occult HBV infection is characterized by a positive HBV DNA and presence of anti-HBc alone or anti-HBc and anti-HBs in the absence of HBsAg.

Further isolate characterization is indicated for epidemiologic public health and control purposes.

5.0 Clinical Evidence

Acute clinical illness is characterized by a discrete onset of symptoms and jaundice or elevated serum aminotransferase levels. Chronic infections may present with disease flares with similar symptoms and signs.

6.0 ICD Code(s)

6.1 ICD-10 Code(s)

B16
Acute hepatitis B
B16.0
Acute hepatitis B with delta-agent (coinfection) with hepatic coma
B16.1
Acute hepatitis B with delta-agent (coinfection) 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 Hepatitis B (acute)(viral) NOS
B18.0,
Chronic viral hepatitis B with delta-agent
B18.1
Chronic viral hepatitis B without delta-agent

6.2 ICD-9/ICD-9CM Code(s)

070.30
Hepatitis B (acute)
070.20
Hepatitis B (acute) with hepatic coma
070.21/31
Hepatitis B (acute) with hepatitis delta
V02.61
Hepatitis B (carrier status)
070.32
Hepatitis B (chronic )
070.22
Hepatitis B (chronic ) with hepatic coma
070.23
Hepatitis B (chronic ) with hepatitis delta

7.0 Type of International Reporting

None

8.0 Comments

9.0 References

Case definitions for diseases under national surveillance. CCDR 2000;26(S3). Retrieved May 2008, from http://www.phac-aspc.gc.ca/publicat/ccdr-rmtc/00vol26/26s3/index.html

Date of Last Revision/Review:

May 2008


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