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ICD-10-CM Codes
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A00-B99
Certain infectious and parasitic diseases
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A80-A89
Viral and prion infections of the central nervous system
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A81-
Atypical virus infections of central nervous system
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2020 ICD-10-CM Diagnosis Code A81.89
Other atypical virus infections of central nervous system
2016 2017 2018 2019 2020 Billable/Specific Code
- A81.89 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2020 edition of ICD-10-CM A81.89 became effective on October 1, 2019.
- This is the American ICD-10-CM version of A81.89 - other international versions of ICD-10 A81.89 may differ.
The following code(s) above
A81.89 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
A81.89:
- A00-B99
2020 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
2020 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)
- A81
ICD-10-CM Diagnosis Code A81
Atypical virus infections of central nervous system
2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
Includes- diseases of the central nervous system caused by prions
Use Additional- code to identify:
- dementia with behavioral disturbance (F02.81)
- dementia without behavioral disturbance (F02.80)
- 056 Degenerative nervous system disorders with mcc
- 057 Degenerative nervous system disorders without mcc
- 974 Hiv with major related condition with mcc
- 975 Hiv with major related condition with cc
- 976 Hiv with major related condition without cc/mcc
Convert A81.89 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
- Disease, diseased - see also Syndrome
- prion, central nervous system A81.9
ICD-10-CM Diagnosis Code A81.9
Atypical virus infection of central nervous system, unspecified
2016 2017 2018 2019 2020 Billable/Specific Code
Applicable To- Prion diseases of the central nervous system NOS
- Infection, infected, infective (opportunistic) B99.9
ICD-10-CM Diagnosis Code B99.9
Unspecified infectious disease
2016 2017 2018 2019 2020 Billable/Specific Code
- atypical
- virus A81.9
ICD-10-CM Diagnosis Code A81.9
Atypical virus infection of central nervous system, unspecified
2016 2017 2018 2019 2020 Billable/Specific Code
Applicable To- Prion diseases of the central nervous system NOS
- specified type NEC A81.89
- slow virus A81.9
ICD-10-CM Diagnosis Code A81.9
Atypical virus infection of central nervous system, unspecified
2016 2017 2018 2019 2020 Billable/Specific Code
Applicable To- Prion diseases of the central nervous system NOS
- virus, viral NOS B34.9
ICD-10-CM Diagnosis Code B34.9
Viral infection, unspecified
2016 2017 2018 2019 2020 Billable/Specific Code
- central nervous system A89
ICD-10-CM Diagnosis Code A89
Unspecified viral infection of central nervous system
2016 2017 2018 2019 2020 Billable/Specific Code
- atypical A81.9
ICD-10-CM Diagnosis Code A81.9
Atypical virus infection of central nervous system, unspecified
2016 2017 2018 2019 2020 Billable/Specific Code
Applicable To- Prion diseases of the central nervous system NOS
- slow virus A81.9
ICD-10-CM Diagnosis Code A81.9
Atypical virus infection of central nervous system, unspecified
2016 2017 2018 2019 2020 Billable/Specific Code
Applicable To- Prion diseases of the central nervous system NOS
- slow A81.9
ICD-10-CM Diagnosis Code A81.9
Atypical virus infection of central nervous system, unspecified
2016 2017 2018 2019 2020 Billable/Specific Code
Applicable To- Prion diseases of the central nervous system NOS
ICD-10-CM Codes Adjacent To A81.89
A81.0 Creutzfeldt-Jakob disease
A81.01 Variant Creutzfeldt-Jakob disease
A81.09 Other Creutzfeldt-Jakob disease
A81.1 Subacute sclerosing panencephalitis
A81.2 Progressive multifocal leukoencephalopathy
A81.8 Other atypical virus infections of central nervous system
A81.82 Gerstmann-Sträussler-Scheinker syndrome
A81.83 Fatal familial insomnia
A81.89
Other atypical virus infections of central nervous system
A81.9 Atypical virus infection of central nervous system, unspecified
A82.9 Rabies, unspecified
A83 Mosquito-borne viral encephalitis
A83.0 Japanese encephalitis
A83.1 Western equine encephalitis
A83.2 Eastern equine encephalitis
A83.3 St Louis encephalitis
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
