B16Header code — not billable

Acute hepatitis B

Chapter
1. Certain infectious and parasitic diseases
Category
B16
Effective date
October 1, 2026

Related codes in category B16

B16.0Acute hepatitis B with delta-agent with hepatic comaYesB16.1Acute hepatitis B with delta-agent without hepatic comaYesB16.2Acute hepatitis B without delta-agent with hepatic comaYesB16.9Acute hepatitis B w/o delta-agent and without hepatic comaYes

Frequently asked questions

What is ICD-10 code B16?

B16 is an ICD-10-CM diagnosis code for Acute hepatitis B.

Is B16 a billable code?

No. B16 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is B16 in?

B16 falls under Chapter 1: Certain infectious and parasitic diseases.

When did B16 become effective?

B16 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to B16?

B16 belongs to category B16, which includes 4 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.