ICD-10-CM Codes
A00-B99 Certain infectious and parasitic diseases
A80-A89 Viral and prion infections of the central nervous system

Atypical virus infections of central nervous system A81- >

Use Additional

Use Additional Help

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.

code to identify:
dementia with behavioral disturbance (
ICD-10-CM Diagnosis Code F02.81
Dementia in other diseases classified elsewhere with behavioral disturbance
Applicable To
- Dementia in other diseases classified elsewhere with aggressive behavior
- Dementia in other diseases classified elsewhere with combative behavior
- Dementia in other diseases classified elsewhere with violent behavior
- Major neurocognitive disorder in other diseases classified elsewhere with aggressive behavior
- Major neurocognitive disorder in other diseases classified elsewhere with combative behavior
- Major neurocognitive disorder in other diseases classified elsewhere with violent behavior
Use Additional
- code, if applicable, to identify wandering in dementia in conditions classified elsewhere (Z91.83)
F02.81
)
dementia without behavioral disturbance (
ICD-10-CM Diagnosis Code F02.80
Dementia in other diseases classified elsewhere without behavioral disturbance
Applicable To
- Dementia in other diseases classified elsewhere NOS
- Major neurocognitive disorder in other diseases classified elsewhere
F02.80
)

Includes

Includes Help

"Includes" further defines, or give examples of, the content of the code or category.

diseases of the central nervous system caused by prions

Codes

A81 Atypical virus infections of central nervous system
- A81.0 Creutzfeldt-Jakob disease
  - A81.00 …… 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

Atypical virus infections of central nervous system A81- >

Dementia in other diseases classified elsewhere with behavioral disturbance

Dementia in other diseases classified elsewhere without behavioral disturbance