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ICD-10-CM Current in FY 2027

A83.5

California encephalitis

Release
FY 2027
Effective

Hierarchy

Where A83.5 sits in the official hierarchy. Each level is the code it is classified under.

  1. A83 Parent Mosquito-borne viral encephalitis
  2. A83.5 This code California encephalitis

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Includes

mosquito-borne viral meningoencephalitis

Inherited from A83 — Mosquito-borne viral encephalitis

Inclusion Terms

California meningoencephalitis

Inclusion Terms

La Crosse encephalitis

Excludes2

Venezuelan equine encephalitis ( A92.2 )

Inherited from A83 — Mosquito-borne viral encephalitis

Excludes2

West Nile fever ( A92.3- )

Inherited from A83 — Mosquito-borne viral encephalitis

Excludes2

West Nile virus ( A92.3- )

Inherited from A83 — Mosquito-borne viral encephalitis

Version History

How A83.5 appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    California encephalitis

  2. FY 2026 Effective

    Unchanged

    California encephalitis

Other codes under A83

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release
FY 2027
Effective
Source file
icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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