Skip to content
HCC Buddy home

A81

Non-Billable (Header)

Atypical virus infections of central nervous system

Includes

  • diseases of the central nervous system caused by prions

Use Additional Code

  • 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-)

Child Codes

A81.0Creutzfeldt-Jakob disease
A81.1Subacute sclerosing panencephalitis
HCC 127
A81.2Progressive multifocal leukoencephalopathy
HCC 127
A81.8Other atypical virus infections of central nervous system
A81.9Atypical virus infection of central nervous system, unspecified
HCC 127

Code Hierarchy

└A81Atypical virus infections of central nervous system
└A81Atypical virus infections of central nervous system

Open A81 in the Interactive Encoder

See full code details, AI coding tips, HCC mappings, and related codes in our interactive encoder. Start your 14-day Pro trial — no credit card required.

Open in EncoderStart 14-Day Pro Trial