A83
Header — not billableMosquito-borne viral encephalitis
The ICD-10 code for mosquito-borne viral encephalitis is A83.
A83 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 9 more specific codes below.
Clinical notes
Excludes2 (not included here)
An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.
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.
- mosquito-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.
Child codes under A83
Related codes in this category
- A80Acute poliomyelitisnon-billable header
- A81Atypical virus infections of central nervous systemnon-billable header
- A82Rabiesnon-billable header
- A84Tick-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
- A83Mosquito-borne viral encephalitisnon-billable header