A77Header code — not billable
Spotted fever [tick-borne rickettsioses]
- Chapter
- 1. Certain infectious and parasitic diseases
- Category
- A77
- Effective date
- October 1, 2026
Related codes in category A77
A77.0Spotted fever due to Rickettsia rickettsiiYesA77.1Spotted fever due to Rickettsia conoriiYesA77.2Spotted fever due to Rickettsia sibericaYesA77.3Spotted fever due to Rickettsia australisYesA77.4EhrlichiosisA77.40Ehrlichiosis, unspecifiedYesA77.41Ehrlichiosis chaffeensis [E. chaffeensis]YesA77.49Other ehrlichiosisYesA77.8Other spotted feversYesA77.9Spotted fever, unspecifiedYes
Frequently asked questions
What is ICD-10 code A77?
A77 is an ICD-10-CM diagnosis code for Spotted fever [tick-borne rickettsioses].
Is A77 a billable code?
No. A77 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 A77 in?
A77 falls under Chapter 1: Certain infectious and parasitic diseases.
When did A77 become effective?
A77 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to A77?
A77 belongs to category A77, which includes 10 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.