ICD-10-CM 2027
ICD-10 code for Arbovirus infection
From the official ICD-10-CM alphabetic index entry “Infection, infected, infective (opportunistic) › arbovirus (arbor virus)”. Page updated September 29, 2026.
About coding Arbovirus infection
The ICD-10-CM code for Arbovirus infection is A94 (Unspecified arthropod-borne viral fever). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on A94.
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 865 (Viral Illness with MCC, relative weight 1.3485) and DRG 866 (Viral Illness without MCC, relative weight 0.8692), 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.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
More specific Arbovirus infection codes (official index)
- specified type NEC A93.8 — Other specified arthropod-borne viral fevers
Common questions about Arbovirus infection ICD-10 codes
What is the ICD-10 code for Arbovirus infection?
- A94 — Unspecified arthropod-borne viral fever. More specific codes apply when the documentation supports them: A93.8.
Is A94 billable?
- Yes. A94 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A94 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A94 as a principal diagnosis.
Is A94 a CC or MCC?
- A94 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.