2025
ICD-10-CM
Diagnosis
Code

A85 Other viral encephalitis, not elsewhere classified

  • Non-billable
  • 2016–2025

A85 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Other viral encephalitis, not elsewhere classified.

Includes

  • Specified viral encephalomyelitis NEC

  • Specified viral meningoencephalitis NEC

Type 1 excludes

  • Encephalitis due to cytomegalovirus (B25.8)

  • Encephalitis due to herpesvirus NEC (B10.0-)

  • Encephalitis due to herpesvirus [herpes simplex] (B00.4)

  • Encephalitis due to measles virus (B05.0)

  • Encephalitis due to mumps virus (B26.2)

  • Encephalitis due to poliomyelitis virus (A80.-)

  • Encephalitis due to zoster (B02.0)

  • Lymphocytic choriomeningitis (A87.2)

  • Myalgic encephalomyelitis (G93.32)

Codes

Versions

  1. 2025

    No changes

  2. 2024

    No changes

  3. 2023

    Code changed

    • Type 1 excludes

        • benign myalgic encephalomyelitis (G93.3)
        • encephalitis due to cytomegalovirus (B25.8)
        • encephalitis due to herpesvirus NEC (B10.0-)
        • encephalitis due to herpesvirus [herpes simplex] (B00.4)
        • encephalitis due to measles virus (B05.0)
        • encephalitis due to mumps virus (B26.2)
        • encephalitis due to poliomyelitis virus (A80.-)
        • encephalitis due to zoster (B02.0)
        • lymphocytic choriomeningitis (A87.2)
        • encephalitis due to cytomegalovirus (B25.8)
        • encephalitis due to herpesvirus NEC (B10.0-)
        • encephalitis due to herpesvirus [herpes simplex] (B00.4)
        • encephalitis due to measles virus (B05.0)
        • encephalitis due to mumps virus (B26.2)
        • encephalitis due to poliomyelitis virus (A80.-)
        • encephalitis due to zoster (B02.0)
        • lymphocytic choriomeningitis (A87.2)
        • myalgic encephalomyelitis (G93.32)
  4. 2022

    No changes

  5. 2021

    No changes

  6. 2020

    No changes

  7. 2019

    No changes

  8. 2018

    No changes

  9. 2017

    No changes

  10. 2016

    New code