B18 ICD-10-CM Code: Chronic viral hepatitis
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
B18Chronic viral hepatitis
ICD-10-CM diagnosis code · United States clinical modification
Where B18 sits
- 1
Chapter 1
Certain infectious and parasitic diseases (A00-B99)
- 2
Section
Viral hepatitis (B15-B19)
- 3
Category B18
Chronic viral hepatitis
- 4
Code B18
Chronic viral hepatitis
Codes under B18
B18 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Notes for this code
Inclusion terms
No inclusion terms are listed for B18.
Code first
No “code first” instruction is listed for B18.
Use additional code
- code, if applicable, for ascites (R18.8)
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for B18.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for B18.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code B18 mean?
B18 is the FY 2027 U.S. ICD-10-CM code for “Chronic viral hepatitis.”
Is B18 a billable or specific ICD-10-CM code?
No. B18 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is B18 located in ICD-10-CM?
B18 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Viral hepatitis (B15-B19) (B15–B19), under category B18, Chronic viral hepatitis.
What coding notes are listed for B18?
No inclusion terms are listed for B18 in this reference record. No code-first instruction is listed. Additional-code instructions: code, if applicable, for ascites (R18.8). No Excludes1 note is listed. No Excludes2 note is listed.