A77.1
✓ Billable
Spotted fever due to Rickettsia conorii
ICD-10-CM · FY2026 · Certain Infectious and Parasitic Diseases
Code
A77.1
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Certain Infectious and Parasitic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code A77.1?
ICD-10-CM code A77.1 represents Spotted fever due to Rickettsia conorii. It is a billable diagnosis code in the Certain Infectious and Parasitic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is A77.1 billable?
Yes. A77.1 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is A77.1 in?
A77.1 belongs to the Certain Infectious and Parasitic Diseases chapter (A00–B99) of ICD-10-CM.
Related codes in the A77 category
A77
Spotted fever [tick-borne rickettsioses]
Non-billable
A77.0
Spotted fever due to Rickettsia rickettsii
Billable
A77.2
Spotted fever due to Rickettsia siberica
Billable
A77.3
Spotted fever due to Rickettsia australis
Billable
A77.4
Ehrlichiosis
Non-billable
A77.8
Other spotted fevers
Billable
A77.9
Spotted fever, unspecified
Billable
A77.40
Ehrlichiosis, unspecified
Billable
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