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ICD-10-CM Codes
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A00-B99
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A80-A89
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A85-
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2023 ICD-10-CM Diagnosis Code A85.2
2023 ICD-10-CM Diagnosis Code A85.2
Arthropod-borne viral encephalitis, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
- A85.2 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2023 edition of ICD-10-CM A85.2 became effective on October 1, 2022.
- This is the American ICD-10-CM version of A85.2 - other international versions of ICD-10 A85.2 may differ.
Type 1 ExcludesType 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as A85.2. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
The following code(s) above
A85.2 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
A85.2:
- A00-B99
2023 ICD-10-CM Range A00-B99
Certain infectious and parasitic diseasesIncludes- diseases generally recognized as communicable or transmissible
Type 1 Excludes- certain localized infections - see body system-related chapters
Type 2 Excludes- carrier or suspected carrier of infectious disease (Z22.-)
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Use Additional- code to identify resistance to antimicrobial drugs (Z16.-)
- A80-A89
2023 ICD-10-CM Range A80-A89
Viral and prion infections of the central nervous systemType 1 Excludes- postpolio syndrome (G14)
- sequelae of poliomyelitis (B91)
- sequelae of viral encephalitis (B94.1)
- A85
ICD-10-CM Diagnosis Code A85
Other viral encephalitis, not elsewhere classified
2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
Includes- specified viral encephalomyelitis NEC
- specified viral meningoencephalitis NEC
Type 1 Excludes- 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)
- Arthropod-borne viral encephalitis of unknown vector
- Viral encephalitis, unknown arthropod vector
ICD-10-CM A85.2 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
- 023 Craniotomy with major device implant or acute complex cns principal diagnosis with mcc or chemotherapy implant or epilepsy with neurostimulator
- 024 Craniotomy with major device implant or acute complex cns principal diagnosis without mcc
- 097 Non-bacterial infection of nervous system except viral meningitis with mcc
- 098 Non-bacterial infection of nervous system except viral meningitis with cc
- 099 Non-bacterial infection of nervous system except viral meningitis without cc/mcc
Convert A85.2 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
- Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
ICD-10-CM Diagnosis Code G04.90
Encephalitis and encephalomyelitis, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Ventriculitis (cerebral) NOS
- viral, virus A86
ICD-10-CM Diagnosis Code A86
Unspecified viral encephalitis
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Viral encephalomyelitis NOS
- Viral meningoencephalitis NOS
- arboviral, arbovirus NEC A85.2
- arthropod-borne NEC A85.2 (viral)
ICD-10-CM Codes Adjacent To A85.2
A84 Tick-borne viral encephalitis
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
A84.89 Other tick-borne viral encephalitis
A84.9 Tick-borne viral encephalitis, unspecified
A85 Other viral encephalitis, not elsewhere classified
A85.0 Enteroviral encephalitis
A85.1 Adenoviral encephalitis
A85.2
Arthropod-borne viral encephalitis, unspecified
A85.8 Other specified viral encephalitis
A86 Unspecified viral encephalitis
A87.0 Enteroviral meningitis
A87.1 Adenoviral meningitis
A87.2 Lymphocytic choriomeningitis
A87.8 Other viral meningitis
A87.9 Viral meningitis, unspecified
A88 Other viral infections of central nervous system, not elsewhere classified
A88.0 Enteroviral exanthematous fever [Boston exanthem]
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
