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ICD-10-CM Current in FY 2027

A85.1

Adenoviral encephalitis

Release
FY 2027
Effective

Hierarchy

Where A85.1 sits in the official hierarchy. Each level is the code it is classified under.

  1. A85 Parent Other viral encephalitis, not elsewhere classified
  2. A85.1 This code Adenoviral 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

specified viral encephalomyelitis NEC

Inherited from A85 — Other viral encephalitis, not elsewhere classified

Includes

specified viral meningoencephalitis NEC

Inherited from A85 — Other viral encephalitis, not elsewhere classified

Inclusion Terms

Adenoviral meningoencephalitis

Excludes1

encephalitis due to cytomegalovirus ( B25.8 )

Inherited from A85 — Other viral encephalitis, not elsewhere classified

Excludes1

encephalitis due to herpesvirus NEC ( B10.0- )

Inherited from A85 — Other viral encephalitis, not elsewhere classified

Excludes1

encephalitis due to herpesvirus [herpes simplex] ( B00.4 )

Inherited from A85 — Other viral encephalitis, not elsewhere classified

Excludes1

encephalitis due to measles virus ( B05.0 )

Inherited from A85 — Other viral encephalitis, not elsewhere classified

Excludes1

encephalitis due to mumps virus ( B26.2 )

Inherited from A85 — Other viral encephalitis, not elsewhere classified

Excludes1

encephalitis due to poliomyelitis virus ( A80 .-)

Inherited from A85 — Other viral encephalitis, not elsewhere classified

Excludes1

encephalitis due to zoster ( B02.0 )

Inherited from A85 — Other viral encephalitis, not elsewhere classified

Excludes1

lymphocytic choriomeningitis ( A87.2 )

Inherited from A85 — Other viral encephalitis, not elsewhere classified

Excludes1

myalgic encephalomyelitis ( G93.32 )

Inherited from A85 — Other viral encephalitis, not elsewhere classified

Version History

How A85.1 appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    Adenoviral encephalitis

  2. FY 2026 Effective

    Unchanged

    Adenoviral encephalitis

Other codes under A85

Codes whose official notes reference A85.1

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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