Diagnosis Code

A81.9 ATYPICAL VIRUS INFECTION OF CENTRAL NERVOUS SYSTEM, UNSP


Code Information

Diagnosis Code: A81.9

Short Description: Atypical virus infection of central nervous system, unsp

Long Description: Atypical virus infection of central nervous system, unspecified

The code A81.9 is VALID for claim submission

Code Classification:

  • Certain infectious and parasitic diseases (A00–B99)
    • Viral and prion infections of the central nervous system (A80-A89)
      • Atypical virus infections of central nervous system (A81)
        • A81.9 Atypical virus infection of central nervous system, unsp

Code Version: 2022 ICD-10-CM


Synonyms

  • Acquired prion disease
  • Autonomic disorder due to prion disease
  • Chorea due to prion disease
  • Dementia due to prion disease
  • Disorder of autonomic nervous system due to infectious disease
  • Familial Alzheimer-like prion disease
  • Parkinsonism due to prion disease
  • Prion disease
  • Secondary tic disorder
  • Slow viral central nervous system infection
  • Tic disorder due to prion disease

References to Index of Diseases and Injuries

The code A81.9 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Inclusion Terms:
    • Prion diseases of the central nervous system NOS

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
A81.9 Right Arrow 046.9 Cns slow virus infec NOS

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
A81 Atypical virus infections of central nervous system
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-Straussler-Scheinker syndrome
A81.83 Fatal familial insomnia
A81.89 Other atypical virus infections of central nervous system


This page was last updated on: 10/1/2023