A77.0 – Spotted fever due to Rickettsia rickettsii

ICD-10-CM 2027 diagnosis code · Rickettsioses

Billable code

ICD-10-CM code A77.0
Code
A77.0 (claims format: A770)
Description
Spotted fever due to Rickettsia rickettsii
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
1. Certain infectious and parasitic diseases (A00-B99)
Block
A75-A79 Rickettsioses
Parent codes
A77

Notes for A77.0

Applicable to:
  • Rocky Mountain spotted fever
  • Sao Paulo fever

Index terms for A77.0

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in A77

Frequently asked questions

What is ICD-10 code A77.0?

A77.0 is the ICD-10-CM code for spotted fever due to Rickettsia rickettsii, in the block A75-A79 (Rickettsioses).

Is A77.0 a billable code?

Yes. A77.0 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does A77.0 belong to?

It belongs to category A77 – Spotted fever [tick-borne rickettsioses].

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.