- A85.8 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2024 edition of ICD-10-CM A85.8 became effective on October 1, 2022.
- This is the American ICD-10-CM version of A85.8 – other international versions of ICD-10 A85.8 may differ.
ICD-10-CM A85.8 is grouped within Diagnostic Related Group(s):
- 097 Non-bacterial infection of nervous system except viral meningitis with mcc
- 098 Non-bacterial infection of nervous system except viral meningitis with cc
- 099 Non-bacterial infection of nervous system except viral meningitis without cc/mcc
- 974 Hiv with major related condition with mcc
- 975 Hiv with major related condition with cc
- 976 Hiv with major related condition without cc/mcc
Applicable To
- Encephalitis lethargica
- Von Economo-Cruchet disease
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2016 (effective 10/1/2015): No change
- 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
- 2024 (effective 10/1/2022): No change
Diagnosis Index entries containing back-references to A85.8:
- inclusion body > acute A86
- lethargica (acute) (infectious) > Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
- Mengo > Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
- Rio Bravo > Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
- Vienna > Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
- specified type NEC > viral, virus A86