ICD-10-CM 2027
ICD-10 code for Kenya fever
From the official ICD-10-CM alphabetic index entry “Kenya fever”. Page updated September 29, 2026.
About coding Kenya fever
The ICD-10-CM code for Kenya fever is A77.1 (Spotted fever due to Rickettsia conorii).
Within A77 (spotted fever [tick-borne rickettsioses]), A77.1 is specifically for spotted fever due to Rickettsia conorii. Related codes cover spotted fever due to Rickettsia rickettsii (A77.0), spotted fever due to Rickettsia siberica (A77.2), spotted fever due to Rickettsia australis (A77.3), ehrlichiosis (A77.4), other spotted fevers (A77.8) and spotted fever, unspecified (A77.9).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 867 (Other Infectious and Parasitic Diseases Diagnoses with MCC, relative weight 2.1859), DRG 868 (Other Infectious and Parasitic Diseases Diagnoses with CC, relative weight 1.0235) and DRG 869 (Other Infectious and Parasitic Diseases Diagnoses without CC/MCC, relative weight 0.6787), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Kenya fever ICD-10 codes
What is the ICD-10 code for Kenya fever?
- A77.1 — Spotted fever due to Rickettsia conorii.
Is A77.1 billable?
- Yes. A77.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A77.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A77.1 as a principal diagnosis.
Is A77.1 a CC or MCC?
- A77.1 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.