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