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ICD-10-CM Codes
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A00-B99
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A80-A89
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A84-
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2023 ICD-10-CM Diagnosis Code A84.81
2023 ICD-10-CM Diagnosis Code A84.81
Powassan virus disease
2021 - New Code 2022 2023 Billable/Specific Code
- A84.81 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 A84.81 became effective on October 1, 2022.
- This is the American ICD-10-CM version of A84.81 - other international versions of ICD-10 A84.81 may differ.
The following code(s) above
A84.81 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
A84.81:
- 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)
- A84
ICD-10-CM Diagnosis Code A84
Tick-borne viral encephalitis
2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
Includes- tick-borne viral meningoencephalitis
- 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
Code History
- 2021 (effective 10/1/2020): New code
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
- Disease, diseased - see also Syndrome
- 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
ICD-10-CM Codes Adjacent To A84.81
A83.3 St Louis encephalitis
A83.4 Australian encephalitis
A83.5 California encephalitis
A83.6 Rocio virus disease
A83.8 Other mosquito-borne viral encephalitis
A83.9 Mosquito-borne viral encephalitis, unspecified
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
A84.81
Powassan virus disease
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
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
