A79Header code — not billable

Other rickettsioses

Chapter
1. Certain infectious and parasitic diseases
Category
A79
Effective date
October 1, 2026

Related codes in category A79

A79.0Trench feverYesA79.1Rickettsialpox due to Rickettsia akariYesA79.8Other specified rickettsiosesA79.81Rickettsiosis due to Ehrlichia sennetsuYesA79.82Anaplasmosis [A. phagocytophilum]YesA79.89Other specified rickettsiosesYesA79.9Rickettsiosis, unspecifiedYes

Frequently asked questions

What is ICD-10 code A79?

A79 is an ICD-10-CM diagnosis code for Other rickettsioses.

Is A79 a billable code?

No. A79 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 A79 in?

A79 falls under Chapter 1: Certain infectious and parasitic diseases.

When did A79 become effective?

A79 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to A79?

A79 belongs to category A79, which includes 7 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.