HealthAssure
HealthAssureGood Life
ICD10BillableValid for clinical use

ICD-10 Code B10.09: Other human herpesvirus encephalitis

B10.09 is a billable ICD-10 diagnosis code used to classify Other human herpesvirus encephalitis in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Certain infectious and parasitic diseases (A00-B99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Certain infectious and parasitic diseases (A00-B99).

When is it used?

  • May be used when a clinician documents other human herpesvirus encephalitis in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
1Certain infectious and parasitic diseases (A00-B99)
block
B10Other human herpesviruses (B10)
category
B10Other human herpesviruses
category
B10.0Other human herpesvirus encephalitis
currentB10.0

Official coding notes

Inclusion terms
  • Human herpesvirus 7 encephalitis

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

Infectious Disease SpecialistGeneral Physician

Coding guidelines

Common synonyms

Other human herpesvirus encephalitis

Frequently asked questions

Code details

CodeB10.09
SystemICD10
Display nameOther human herpesvirus encephalitis
ChapterCertain infectious and parasitic diseases (A00-B99)
BlockOther human herpesviruses (B10)

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Encephalitis(chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)Encephalitis(chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)Encephalitis(chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)Encephalitis(chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)Herpes, herpesvirus, herpeticHerpes, herpesvirus, herpeticHerpes, herpesvirus, herpeticMeningoencephalitisMeningoencephalitisMeningoencephalitisMeningoencephalitis

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code B10.09 for Other human herpesvirus encephalitis | HealthAssure