ICD-10-CM Codes
A00-B99
A80-A89
Atypical virus infections of central nervous system A81

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, if applicable, to identify:
dementia with anxiety (
ICD-10-CM Diagnosis Code F02.84
Dementia in other diseases classified elsewhere, unspecified severity, with anxiety
Applicable To
- Major neurocognitive disorder in other diseases classified elsewhere unspecified severity, with anxiety
F02.84
,
ICD-10-CM Diagnosis Code F02.A4
Dementia in other diseases classified elsewhere, mild, with anxiety
Applicable To
- Major neurocognitive disorder in other diseases classified elsewhere, mild, with anxiety
F02.A4
,
ICD-10-CM Diagnosis Code F02.B4
Dementia in other diseases classified elsewhere, moderate, with anxiety
Applicable To
- Major neurocognitive disorder in other diseases classified elsewhere, moderate, with anxiety
F02.B4
,
ICD-10-CM Diagnosis Code F02.C4
Dementia in other diseases classified elsewhere, severe, with anxiety
Applicable To
- Major neurocognitive disorder in other diseases classified elsewhere, severe, with anxiety
F02.C4
)
dementia with behavioral disturbance (
ICD-10-CM Diagnosis Code F02.81
Dementia in other diseases classified elsewhere, unspecified severity, with behavioral disturbance
F02.81-
,
ICD-10-CM Diagnosis Code F02.A1
Dementia in other diseases classified elsewhere, mild, with behavioral disturbance
F02.A1-
,
ICD-10-CM Diagnosis Code F02.B1
Dementia in other diseases classified elsewhere, moderate, with behavioral disturbance
F02.B1-
,
ICD-10-CM Diagnosis Code F02.C1
Dementia in other diseases classified elsewhere, severe, with behavioral disturbance
F02.C1-
)
dementia with mood disturbance (
ICD-10-CM Diagnosis Code F02.83
Dementia in other diseases classified elsewhere, unspecified severity, with mood disturbance
Applicable To
- Dementia in other diseases classified elsewhere, unspecified severity, with mood disturbance such as depression, apathy, or anhedonia
- Major neurocognitive disorder in other diseases classified elsewhere unspecified severity, with mood disturbance such as with depression, apathy, or anhedonia
F02.83
,
ICD-10-CM Diagnosis Code F02.A3
Dementia in other diseases classified elsewhere, mild, with mood disturbance
Applicable To
- Dementia in other diseases classified elsewhere, mild, with mood disturbance such as depression, apathy, or anhedonia
- Major neurocognitive disorder in other diseases classified elsewhere, mild, with mood disturbance such as depression, apathy, or anhedonia
F02.A3
,
ICD-10-CM Diagnosis Code F02.B3
Dementia in other diseases classified elsewhere, moderate, with mood disturbance
Applicable To
- Dementia in other diseases classified elsewhere, moderate, with mood disturbance such as depression, apathy, or anhedonia
- Major neurocognitive disorder in other diseases classified elsewhere, moderate, with mood disturbance such as depression, apathy, or anhedonia
F02.B3
,
ICD-10-CM Diagnosis Code F02.C3
Dementia in other diseases classified elsewhere, severe, with mood disturbance
Applicable To
- Dementia in other diseases classified elsewhere, severe, with mood disturbance such as depression, apathy, or anhedonia
- Major neurocognitive disorder in other diseases classified elsewhere, severe, with mood disturbance such as depression, apathy, or anhedonia
F02.C3
)
dementia with psychotic disturbance (
ICD-10-CM Diagnosis Code F02.82
Dementia in other diseases classified elsewhere, unspecified severity, with psychotic disturbance
Applicable To
- Dementia in other diseases classified elsewhere, unspecified severity, with psychotic disturbance such as hallucinations, paranoia, suspiciousness, or delusional state
- Major neurocognitive disorder in other diseases classified elsewhere, unspecified, with psychotic disturbance such as hallucinations, paranoia, suspiciousness, or delusional state
F02.82
,
ICD-10-CM Diagnosis Code F02.A2
Dementia in other diseases classified elsewhere, mild, with psychotic disturbance
Applicable To
- Dementia in other diseases classified elsewhere, mild, with psychotic disturbance such as hallucinations, paranoia, suspiciousness, or delusional state
- Major neurocognitive disorder in other diseases classified elsewhere, mild, with psychotic disturbance such as hallucinations, paranoia, suspiciousness, or delusional state
F02.A2
,
ICD-10-CM Diagnosis Code F02.B2
Dementia in other diseases classified elsewhere, moderate, with psychotic disturbance
Applicable To
- Dementia in other diseases classified elsewhere, moderate, with psychotic disturbance such as hallucinations, paranoia, suspiciousness, or delusional state
- Major neurocognitive disorder in other diseases classified elsewhere, moderate, with psychotic disturbance such as hallucinations, paranoia, suspiciousness, or delusional state
F02.B2
,
ICD-10-CM Diagnosis Code F02.C2
Dementia in other diseases classified elsewhere, severe, with psychotic disturbance
Applicable To
- Dementia in other diseases classified elsewhere, severe, with psychotic disturbance such as hallucinations, paranoia, suspiciousness, or delusional state
- Major neurocognitive disorder in other diseases classified elsewhere, severe, with psychotic disturbance such as hallucinations, paranoia, suspiciousness, or delusional state
F02.C2
)
dementia without behavioral disturbance (
ICD-10-CM Diagnosis Code F02.80
Dementia in other diseases classified elsewhere, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
Applicable To
- Dementia in other diseases classified elsewhere NOS
- Major neurocognitive disorder in other diseases classified elsewhere NOS
F02.80
,
ICD-10-CM Diagnosis Code F02.A0
Dementia in other diseases classified elsewhere, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
Applicable To
- Dementia in other diseases classified elsewhere, mild, NOS
- Major neurocognitive disorder in other diseases classified elsewhere, mild, NOS
F02.A0
,
ICD-10-CM Diagnosis Code F02.B0
Dementia in other diseases classified elsewhere, moderate, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
Applicable To
- Dementia in other diseases classified elsewhere, moderate, NOS
- Major neurocognitive disorder in other diseases classified elsewhere, moderate, NOS
F02.B0
,
ICD-10-CM Diagnosis Code F02.C0
Dementia in other diseases classified elsewhere, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
Applicable To
- Dementia in other diseases classified elsewhere, severe, NOS
- Major neurocognitive disorder in other diseases classified elsewhere, severe, NOS
F02.C0
)
mild neurocognitive disorder due to known physiological condition (
ICD-10-CM Diagnosis Code F06.7
Mild neurocognitive disorder due to known physiological condition
Applicable To
- Mild neurocognitive impairment due to a known physiological condition
Code First
- the underlying physiological condition, such as:
- Alzheimer's disease (G30.-)
- frontotemporal neurocognitive disorder (G31.09)
- human immunodeficiency virus [HIV] disease (B20)
- Huntington's disease (G10)
- Neurocognitive disorder with Lewy bodies (G31.83)
- Parkinson's disease (G20)
- systemic lupus erythematosus (M32.-)
- traumatic brain injury (S06.-)
- vitamin B deficiency (E53-)
Type 1 Excludes
- age related cognitive decline (R41.81)
- altered mental status (R41.82)
- cerebral degeneration (G31.9)
- change in mental status (R41.82)
- cognitive deficits following (sequelae of) cerebral hemorrhage or infarction (I69.01-I69.11-, I69.21-I69.31-, I69.81- I69.91-)
- dementia (F01.-, F02.-, F03)
- mild cognitive impairment due to unknown or unspecified etiology (G31.84)
- neurologic neglect syndrome (R41.4)
- personality change, nonpsychotic (F68.8)
F06.7-
)

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, unspecified severity, with anxiety

Dementia in other diseases classified elsewhere, mild, with anxiety

Dementia in other diseases classified elsewhere, moderate, with anxiety

Dementia in other diseases classified elsewhere, severe, with anxiety

Dementia in other diseases classified elsewhere, unspecified severity, with behavioral disturbance

Dementia in other diseases classified elsewhere, mild, with behavioral disturbance

Dementia in other diseases classified elsewhere, moderate, with behavioral disturbance

Dementia in other diseases classified elsewhere, severe, with behavioral disturbance

Dementia in other diseases classified elsewhere, unspecified severity, with mood disturbance

Dementia in other diseases classified elsewhere, mild, with mood disturbance

Dementia in other diseases classified elsewhere, moderate, with mood disturbance

Dementia in other diseases classified elsewhere, severe, with mood disturbance

Dementia in other diseases classified elsewhere, unspecified severity, with psychotic disturbance

Dementia in other diseases classified elsewhere, mild, with psychotic disturbance

Dementia in other diseases classified elsewhere, moderate, with psychotic disturbance

Dementia in other diseases classified elsewhere, severe, with psychotic disturbance

Dementia in other diseases classified elsewhere, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety

Dementia in other diseases classified elsewhere, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety

Dementia in other diseases classified elsewhere, moderate, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety

Dementia in other diseases classified elsewhere, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety

Mild neurocognitive disorder due to known physiological condition