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ICD-10-CM Codes
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A00-B99
Certain infectious and parasitic diseases
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B00-B09
Viral infections characterized by skin and mucous membrane lesions
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B02-
Zoster [herpes zoster]
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2021 ICD-10-CM Diagnosis Code B02.0
2021 ICD-10-CM Diagnosis Code B02.0
Zoster encephalitis
2016 2017 2018 2019 2020 2021 Billable/Specific Code
- B02.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2021 edition of ICD-10-CM B02.0 became effective on October 1, 2020.
- This is the American ICD-10-CM version of B02.0 - other international versions of ICD-10 B02.0 may differ.
Applicable To- Zoster meningoencephalitis
The following code(s) above
B02.0 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
B02.0:
- Herpes zoster encephalitis
Clinical Information
- Inflammation of brain tissue caused by infection with the varicella-zoster virus (herpesvirus 3, human). This condition is associated with immunocompromised states, including the acquired immunodeficiency syndrome. Pathologically, the virus tends to induce a vasculopathy and infect oligodendrocytes and ependymal cells, leading to cerebral infarction, multifocal regions of demyelination, and periventricular necrosis. Manifestations of varicella encephalitis usually occur 5-7 days after onset of herpes zoster and include headache; vomiting; lethargy; focal neurologic deficits; fever; and coma. (from Joynt, Clinical Neurology, 1996, ch 26, pp29-32; hum pathol 1996 sep;27(9):927-38)
ICD-10-CM B02.0 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
- 073 Cranial and peripheral nerve disorders with mcc
- 074 Cranial and peripheral nerve disorders without mcc
- 791 Prematurity with major problems
- 793 Full term neonate with major problems
- 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
Convert B02.0 to ICD-9-CM
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
Code annotations containing back-references to B02.0:
- Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
ICD-10-CM Diagnosis Code G04.90
Encephalitis and encephalomyelitis, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
Applicable To- Ventriculitis (cerebral) NOS
- in (due to)
- herpes zoster B02.0
- Herpes, herpesvirus, herpetic B00.9
ICD-10-CM Diagnosis Code B00.9
Herpesviral infection, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
Applicable To- Herpes simplex infection NOS
- zoster B02.9 - see also condition
ICD-10-CM Diagnosis Code B02.9
Zoster without complications
2016 2017 2018 2019 2020 2021 Billable/Specific Code
ICD-10-CM Codes Adjacent To B02.0
B01.0 Varicella meningitis
B01.1 Varicella encephalitis, myelitis and encephalomyelitis
B01.11 Varicella encephalitis and encephalomyelitis
B01.2 Varicella pneumonia
B01.8 Varicella with other complications
B01.89 Other varicella complications
B01.9 Varicella without complication
B02 Zoster [herpes zoster]
B02.0
Zoster encephalitis
B02.2 Zoster with other nervous system involvement
B02.21 Postherpetic geniculate ganglionitis
B02.22 Postherpetic trigeminal neuralgia
B02.23 Postherpetic polyneuropathy
B02.29 Other postherpetic nervous system involvement
B02.3 Zoster ocular disease
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
