ICD-10-CM › A00-B99 › A80-A89 › A codes › A84

A84

Tick-borne viral encephalitis

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 4 more specific codes instead:

  • A84.0 Far Eastern tick-borne encephalitis [Russian spring-summer encephalitis]
  • A84.1 Central European tick-borne encephalitis
  • A84.8 Other tick-borne viral encephalitis (also a header)
  • A84.9 Tick-borne viral encephalitis, unspecified

What has happened to this code

Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2012 Added to the draft code set draft Tick-borne viral encephalitis

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

This code

Includes

  • tick-borne viral meningoencephalitis

Inherited from the A80-A89 section Viral and prion infections of the central nervous system (A80-A89)

Excludes1 - never coded here

  • postpolio syndrome (G14)
  • sequelae of poliomyelitis (B91)
  • sequelae of viral encephalitis (B94.1)