A85
Non-billableOther viral encephalitis, not elsewhere classified
Other viral encephalitis, not elsewhere classified
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- diseases generally recognized as communicable or transmissible
- specified viral encephalomyelitis NEC
- specified viral meningoencephalitis NEC
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- certain localized infections - see body system-related chapters
- •postpolio syndromeG14
- •sequelae of poliomyelitisB91
- •sequelae of viral encephalitisB94.1
- •encephalitis due to cytomegalovirusB25.8
- •encephalitis due to herpesvirus NECB10.0
- •encephalitis due to herpesvirus [herpes simplex]B00.4
- •encephalitis due to measles virusB05.0
- •encephalitis due to mumps virusB26.2
- •encephalitis due to poliomyelitis virusA80
- •encephalitis due to zosterB02.0
- •lymphocytic choriomeningitisA87.2
- •myalgic encephalomyelitisG93.32
Excludes 2
Conditions not included here, but the patient may have both
Use Additional Code
Additional codes that should follow this code
Child Codes (4)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(3)
Frequently Asked Questions
What is the ICD-10 code for other viral encephalitis, not elsewhere classified?
The ICD-10-CM code for other viral encephalitis, not elsewhere classified is A85. The full clinical description is "Other viral encephalitis, not elsewhere classified". A85 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code A85 mean?
ICD-10-CM code A85 represents “Other viral encephalitis, not elsewhere classified”. It is classified under Chapter 1: Certain Infectious and Parasitic Diseases and is a non-billable header code. Use a more specific child code for billing purposes.
Is A85 a billable code?
No, A85 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 4 child codes under A85.
What chapter is A85 in?
A85 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).
What codes cannot be used with A85?
A85 has Excludes1 notes indicating codes that cannot be used together with it, including: certain localized infections - see body system-related chapters; postpolio syndrome (G14); sequelae of poliomyelitis (B91); and 10 more.
What are the subcategories under A85?
A85 has 4 child codes, including: A85.0 (Enteroviral encephalitis), A85.1 (Adenoviral encephalitis), A85.2 (Arthropod-borne viral encephalitis, unspecified), A85.8 (Other specified viral encephalitis).
Are additional codes required with A85?
Yes, when using A85, also report: resistance to antimicrobial drugs (Z16.-).
What are the UMLS CUIs for A85?
A85 is linked to 3 UMLS Concept Unique Identifiers: C0494074, C4290050, C4290051. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does A85 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like other viral encephalitis, not elsewhere classified affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of A85?
A85 maps to the ICD-11 code: 1C80 (Viral encephalitis, not elsewhere classified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.