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.
Status
Non-billable / Header
Block
A80-A89
Child Codes
4
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 syndrome (G14)
- sequelae of poliomyelitis (B91)
- sequelae of viral encephalitis (B94.1)
- encephalitis due to cytomegalovirus (B25.8)
- encephalitis due to herpesvirus NEC (B10.0-)
- encephalitis due to herpesvirus [herpes simplex] (B00.4)
- encephalitis due to measles virus (B05.0)
- encephalitis due to mumps virus (B26.2)
- encephalitis due to poliomyelitis virus (A80.-)
- encephalitis due to zoster (B02.0)
- lymphocytic choriomeningitis (A87.2)
- myalgic encephalomyelitis (G93.32)
Excludes 2
Conditions not included here, but the patient may have both
Use Additional Code
Additional codes that should follow this code
- code to identify resistance to antimicrobial drugs (Z16.-)
Child Codes (4)
Also Known As / Clinical Terms
Frequently Asked Questions
What is ICD-10 code A85?
ICD-10-CM code A85 represents "Other viral encephalitis, not elsewhere classified". It 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 you should also code: code to identify 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.
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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.