A28Header code — not billable

Other zoonotic bacterial diseases, not elsewhere classified

Chapter
1. Certain infectious and parasitic diseases
Category
A28
Effective date
October 1, 2026

Related codes in category A28

A28.0PasteurellosisYesA28.1Cat-scratch diseaseYesA28.2Extraintestinal yersiniosisYesA28.8Oth zoonotic bacterial diseases, not elsewhere classifiedYesA28.9Zoonotic bacterial disease, unspecifiedYes

Frequently asked questions

What is ICD-10 code A28?

A28 is an ICD-10-CM diagnosis code for Other zoonotic bacterial diseases, not elsewhere classified.

Is A28 a billable code?

No. A28 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 A28 in?

A28 falls under Chapter 1: Certain infectious and parasitic diseases.

When did A28 become effective?

A28 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to A28?

A28 belongs to category A28, 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.