2024 ICD-10-CM Diagnosis Code A83

by

Mosquito-borne viral encephalitis

  • A83 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2024 edition of ICD-10-CM A83 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of A83 – other international versions of ICD-10 A83 may differ.

Type 2 Excludes

  • Venezuelan equine encephalitis (A92.2)
  • West Nile fever (A92.3-)
  • West Nile virus (A92.3-)

Includes

  • mosquito-borne viral meningoencephalitis

The following code(s) above A83 contain annotation back-references

 that may be applicable to A83:

  • A00-B99  Certain infectious and parasitic diseases
  • A80-A89  Viral and prion infections of the central nervous system

Code History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change