NPI Atlas

A77.9 – Spotted fever, unspecified

ICD-10-CM 2027 diagnosis code · Rickettsioses

Billable code

ICD-10-CM code A77.9

Code: A77.9 (claims format: A779)
Description: Spotted fever, unspecified
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 A77.9

Applicable to:

Tick-borne typhus NOS

Index terms for A77.9

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

Related codes in A77

A77.0 – Spotted fever due to Rickettsia rickettsiiBillable
A77.1 – Spotted fever due to Rickettsia conoriiBillable
A77.2 – Spotted fever due to Rickettsia sibericaBillable
A77.3 – Spotted fever due to Rickettsia australisBillable
A77.4 – EhrlichiosisHeader
A77.8 – Other spotted feversBillable

Frequently asked questions

What is ICD-10 code A77.9?

A77.9 is the ICD-10-CM code for spotted fever, unspecified, in the block A75-A79 (Rickettsioses).

Is A77.9 a billable code?

Yes. A77.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does A77.9 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.