ICD-10-CM
ICD-10 code for Typhus (fever) African tick: A77.1
The ICD-10-CM index points "Typhus (fever) African tick" to A77.1, Spotted fever due to Rickettsia conorii. A77.1 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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More specific codes in A77
A header groups codes and is not billed. A billable code is one you can report.
- A77Spotted fever [tick-borne rickettsioses]Header
- A77.0Spotted fever due to Rickettsia rickettsiiBillable
- A77.1Spotted fever due to Rickettsia conoriiBillable
- A77.2Spotted fever due to Rickettsia sibericaBillable
- A77.3Spotted fever due to Rickettsia australisBillable
- A77.4EhrlichiosisHeader
- A77.40Ehrlichiosis, unspecifiedBillable
- A77.41Ehrlichiosis chaffeensis [E. chaffeensis]Billable
- A77.49Other ehrlichiosisBillable
- A77.8Other spotted feversBillable
- A77.9Spotted fever, unspecifiedBillable
Related conditions
Related pages
- A77.1 code detailsNotes, nearby codes, CMS-HCC group
- Category A77Every code under it
- Chapter 1Certain infectious and parasitic diseases
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Typhus (fever) African tick?
The ICD-10-CM index points "Typhus (fever) African tick" to A77.1, Spotted fever due to Rickettsia conorii. A77.1 is a billable code.
Is A77.1 billable?
Yes. A77.1 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What chapter is A77.1 in?
Chapter 1. Certain infectious and parasitic diseases.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.