A84.9
A84.9: Tick-borne viral encephalitis, unspecified
Billable / specific codeICD-10-CM
A84.9 is a billable, specific ICD-10-CM code for tick-borne viral encephalitis, unspecified. It is valid for submission on a claim.
Check A84.9 with the rest of the claim: free scrubberRisk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
A84.9 is named in 8 Medicare coverage policies: 8 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A56612Billing and Coding: CT of the Head
- A56771Billing and Coding: Special Electroencephalography
- A57204Billing and Coding: MRI and CT Scans of the Head and Neck
- A57206Billing and Coding: Lumbar MRI
Alphabetic index entries that lead here
- Encephalitis›tick-borne
- Infection, infected, infective›virus, viral NOS›encephalitis, tick-borne
- Encephalitis›viral, virus›arthropod-borne NEC›tick-borne
Code history
Unchanged in every release from FY2024 to FY2027.