Atypical virus infections of central nervous system - A81
This notation helps users understand the scope of a code A81 category and provides additional information about the conditions or terms that fall under that category.
Category Includes:
- diseases of the central nervous system caused by prions
Use Additional Code: This note indicates that an additional code should be used in conjunction with the primary code "A81" to provide a complete picture of the patient's condition or to capture associated factors.
Use Additional:
- code, if applicable, to identify:
- dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4)
- dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-)
- dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3)
- dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2)
- dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0)
- mild neurocognitive disorder due to known physiological condition (F06.7-)
These ranges represents subcategories of Atypical virus infections of central nervous system. The "A81" signifies that these are the diseases within this broad category.
Codes:
- A81.0 - Creutzfeldt-Jakob disease
- A81.00 - Creutzfeldt-Jakob disease, unspecified
- 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
- A81.81 - Kuru
- 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