A23Header code — not billable

Brucellosis

Chapter
1. Certain infectious and parasitic diseases
Category
A23
Effective date
October 1, 2026

Related codes in category A23

A23.0Brucellosis due to Brucella melitensisYesA23.1Brucellosis due to Brucella abortusYesA23.2Brucellosis due to Brucella suisYesA23.3Brucellosis due to Brucella canisYesA23.8Other brucellosisYesA23.9Brucellosis, unspecifiedYes

Frequently asked questions

What is ICD-10 code A23?

A23 is an ICD-10-CM diagnosis code for Brucellosis.

Is A23 a billable code?

No. A23 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 A23 in?

A23 falls under Chapter 1: Certain infectious and parasitic diseases.

When did A23 become effective?

A23 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to A23?

A23 belongs to category A23, which includes 6 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.