A84
Header — not billableTick-borne viral encephalitis
The ICD-10 code for tick-borne viral encephalitis is A84.
A84 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 4 more specific codes below.
Clinical notes
Includes
Terms listed here further define or give examples of the conditions grouped under this code — they describe what the code covers, not a separate diagnosis.
- tick-borne viral meningoencephalitis
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- A80Acute poliomyelitisnon-billable header
- A81Atypical virus infections of central nervous systemnon-billable header
- A82Rabiesnon-billable header
- A83Mosquito-borne viral encephalitisnon-billable header
- A85Other viral encephalitis, not elsewhere classifiednon-billable header
- A86Unspecified viral encephalitis
- A87Viral meningitisnon-billable header
- A88Other viral infections of central nervous system, not elsewhere classifiednon-billable header
- A89Unspecified viral infection of central nervous system
- A84Tick-borne viral encephalitisnon-billable header