B18.0 ICD-10-CA subcategory: Chronic viral hepatitis B with delta-agent
B18.0 isn’t a code on its own. Choose one of the 2 codes beneath it, the one the documentation supports.
Official description
B18.0Chronic viral hepatitis B with delta-agent
ICD-10-CA · Canada · Also written B180
Codes in B18.0
B18.0 isn’t a code on its own. Open the code that matches what the note documents.
Notes for B18.0
As CIHI prints them, with any note B18.0 takes from the headings above it.
Includes
- Diseases generally recognized as communicable or transmissibleFrom Chapter 1: Certain infectious and parasitic diseases (A00-B99)
Use additional code
Add a code for this detail when the note documents it.
- Use additional code (Chapter XX), to identify drug, if post-transfusion hepatitis.From B15-B19 Viral hepatitis
- Use additional code (U82-U84) to identify resistance to antimicrobial drugsFrom Chapter 1: Certain infectious and parasitic diseases (A00-B99)
Excludes
Conditions classified elsewhere.
- Cytomegaloviral hepatitis (B25.1)herpesviral [herpes simplex] hepatitis (B00.8)sequelae of viral hepatitis (B94.2)From B15-B19 Viral hepatitis
- Carrier or suspected carrier of infectious disease (Z22.-)certain localized infections - see body system-related chaptersinfectious and parasitic diseases:• complicating pregnancy, childbirth and the puerperium [except obstetrical tetanus] (O98.-)• specific to the perinatal period [except tetanus neonatorum, whooping cough, congenital syphilis, perinatal gonococcal infection and perinatal human immunodeficiency virus [HIV] disease] (P35-P39)influenza and other acute respiratory infections (J00-J22)From Chapter 1: Certain infectious and parasitic diseases (A00-B99)
Where B18.0 sits
- 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
- 2Block B15-B19Viral hepatitis
- 3Category B18Chronic viral hepatitis
- 4Subcategory B18.0Chronic viral hepatitis B with delta-agent
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
Is B18.0 a valid ICD-10-CA code?
No. B18.0 (Chronic viral hepatitis B with delta-agent) is a subcategory heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 2 codes; record the one the documentation supports.
Where is B18.0 in ICD-10-CA?
B18.0 sits under B18 Chronic viral hepatitis, within B15-B19 Viral hepatitis, within Chapter 1: Certain infectious and parasitic diseases (A00-B99).
What coding notes apply to B18.0?
ICD-10-CA lists Use additional code, Excludes, Includes notes for B18.0, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.