Other viral encephalitis, not elsewhere classified
- A85 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 A85 became effective on October 1, 2023.
- This is the American ICD-10-CM version of A85 – other international versions of ICD-10 A85 may differ.
AD
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)
Includes
- specified viral encephalomyelitis NEC
- specified viral meningoencephalitis NEC
The following code(s) above A85 contain annotation back-references
that may be applicable to A85:
- 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