Is A77 a billable code?
No. A77 is a header code that groups 9 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
A77: Spotted fever [tick-borne rickettsioses]
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
A77 groups related diagnoses under spotted fever [tick-borne rickettsioses]. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under A77
- A77.0Spotted fever due to Rickettsia rickettsii
- A77.1Spotted fever due to Rickettsia conorii
- A77.2Spotted fever due to Rickettsia siberica
- A77.3Spotted fever due to Rickettsia australis
- A77.40Ehrlichiosis, unspecified
- A77.41Ehrlichiosis chaffeensis [E. chaffeensis]
- A77.49Other ehrlichiosis
- A77.8Other spotted fevers
- A77.9Spotted fever, unspecified
A77 questions
What does A77 mean?
A77 is the ICD-10-CM code for Spotted fever [tick-borne rickettsioses]. It is in chapter 1, Certain infectious and parasitic diseases (A00-B99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.