B18
Non-billableChronic viral hepatitis
Chronic viral hepatitis
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- diseases generally recognized as communicable or transmissible
- Carrier of viral hepatitis
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- certain localized infections - see body system-related chapters
- •sequelae of viral hepatitisB94.2
Excludes 2
Conditions not included here, but the patient may have both
- •carrier or suspected carrier of infectious diseaseZ22
- •infectious and parasitic diseases complicating pregnancy, childbirth and the puerperiumO98
- •infectious and parasitic diseases specific to the perinatal periodP35-P39
- •influenza and other acute respiratory infectionsJ00-J22
- •cytomegaloviral hepatitisB25.1
- •herpesviral [herpes simplex] hepatitisB00.81
Use Additional Code
Additional codes that should follow this code
Child Codes (5)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(6)
Frequently Asked Questions
What is the ICD-10 code for chronic viral hepatitis?
The ICD-10-CM code for chronic viral hepatitis is B18. The full clinical description is "Chronic viral hepatitis". B18 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code B18 mean?
ICD-10-CM code B18 represents “Chronic viral hepatitis”. It is classified under Chapter 1: Certain Infectious and Parasitic Diseases and is a non-billable header code. Use a more specific child code for billing purposes.
Is B18 a billable code?
No, B18 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 5 child codes under B18.
What chapter is B18 in?
B18 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).
What codes cannot be used with B18?
B18 has Excludes1 notes indicating codes that cannot be used together with it, including: certain localized infections - see body system-related chapters; sequelae of viral hepatitis (B94.2).
What are the subcategories under B18?
B18 has 5 child codes, including: B18.0 (Chronic viral hepatitis B with delta-agent), B18.1 (Chronic viral hepatitis B without delta-agent), B18.2 (Chronic viral hepatitis C), B18.8 (Other chronic viral hepatitis), and 1 more.
Are additional codes required with B18?
Yes, when using B18, also report: resistance to antimicrobial drugs (Z16.-).
What are the UMLS CUIs for B18?
B18 is linked to 2 UMLS Concept Unique Identifiers: C0549126, C0276623. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does B18 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like chronic viral hepatitis affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of B18?
B18 maps to the ICD-11 code: 1E51.Z (Chronic viral hepatitis, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.