A84.1 Central European tick-borne encephalitis

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applies from A84 Tick-borne viral encephalitis

Includes

• tick-borne viral meningoencephalitis

MS-DRG index

Defines the logic of DRG(s) 023-024 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 063.2 Central european encephalitis

Diagnosis Index entries for A84.1

• Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) › Central European (tick-borne)
• Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) › Czechoslovakian
• Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) › viral, virus › arthropod-borne NEC › tick-borne › biundulant
• Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) › viral, virus › arthropod-borne NEC › tick-borne › central European
• Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) › viral, virus › arthropod-borne NEC › tick-borne › Czechoslovakian
• Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) › viral, virus › arthropod-borne NEC › tick-borne › diphasic meningoencephalitis
• Meningoencephalitis › diphasic

Nearby codes

• A84 Tick-borne viral encephalitis
• A84.0 Far Eastern tick-borne encephalitis [Russian spring-summer encephalitis]
• A84.1 Central European tick-borne encephalitis (this code)
• A84.8 Other tick-borne viral encephalitis
• A84.81 Powassan virus disease
• A84.89 Other tick-borne viral encephalitis
• A84.9 Tick-borne viral encephalitis, unspecified