B18.1Billable

Chronic viral hepatitis B without delta-agent

Chapter
1. Certain infectious and parasitic diseases
Category
B18
Effective date
October 1, 2026

Related codes in category B18

B18Chronic viral hepatitisB18.0Chronic viral hepatitis B with delta-agentYesB18.2Chronic viral hepatitis CYesB18.8Other chronic viral hepatitisYesB18.9Chronic viral hepatitis, unspecifiedYes

Frequently asked questions

What is ICD-10 code B18.1?

B18.1 is an ICD-10-CM diagnosis code for Chronic viral hepatitis B without delta-agent.

Is B18.1 a billable code?

Yes. B18.1 is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is B18.1 in?

B18.1 falls under Chapter 1: Certain infectious and parasitic diseases.

When did B18.1 become effective?

B18.1 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to B18.1?

B18.1 belongs to category B18, which includes 5 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.