A84.0 FAR EASTERN TICK-BORNE ENCEPHALITIS

Code Information

Diagnosis Code: A84.0
Short Description: Far Eastern tick-borne encephalitis
Long Description: Far Eastern tick-borne encephalitis [Russian spring-summer encephalitis]
Code Version: 2025 ICD-10-CM

The code A84.0 is VALID for claim submission

Code Classification

Certain infectious and parasitic diseases (A00–B99)
- Viral and prion infections of the central nervous system (A80-A89)
  - Tick-borne viral encephalitis (A84)

Synonyms

Encephalitis caused by Far Eastern tick-borne encephalitis virus
Encephalitis caused by tick-borne encephalitis virus

Crosswalk Information

ICD-10 Code		ICD-9 Code	ICD-9 Description
A84.0		063.0	Russia spr-summer enceph

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code	ICD-10 Description
A84	Tick-borne viral encephalitis
A84.1	Central European tick-borne encephalitis
A84.8	Other tick-borne viral encephalitis
A84.81	Powassan virus disease
A84.89	Other tick-borne viral encephalitis
A84.9	Tick-borne viral encephalitis, unspecified

This page was last updated on: 10/1/2025

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