MCMedicalCodingSoftware
A84.0

A84.0: Far Eastern tick-borne encephalitis [Russian spring-summer encephalitis]

Billable / specific codeICD-10-CM

A84.0 is a billable, specific ICD-10-CM code for far eastern tick-borne encephalitis [russian spring-summer encephalitis]. It is valid for submission on a claim.

Check A84.0 with the rest of the claim: free scrubber

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

A84.0 is named in 5 Medicare coverage policies: 5 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
  • A56773Billing and Coding: Neurophysiology Evoked Potentials (NEPs)
  • A57204Billing and Coding: MRI and CT Scans of the Head and Neck

Alphabetic index entries that lead here

  • Russian spring-summer type encephalitis
  • Encephalitis›Far Eastern(tick-borne)
  • Encephalitis›Russian›spring-summer(taiga)
  • Encephalitis›viral, virus›arthropod-borne NEC›tick-borne›Far Eastern
  • Encephalitis›viral, virus›arthropod-borne NEC›tick-borne›Russian spring-summer(taiga)

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under A84

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.