1. ICD-10-CM Codes
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2. A00-B99
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3. B00-B09
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4. B09-
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5. 2023 ICD-10-CM Diagnosis Code B09

2023 ICD-10-CM Diagnosis Code B09

Unspecified viral infection characterized by skin and mucous membrane lesions

2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

• B09 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• Short description: Unsp viral infection with skin and mucous membrane lesions
• The 2023 edition of ICD-10-CM B09 became effective on October 1, 2022.
• This is the American ICD-10-CM version of B09 - other international versions of ICD-10 B09 may differ.

• Keratitis in exanthema
• Keratitis in exanthema (eye condition)
• Unilateral laterothoracic exanthem
• Viral exanthem
• Viral exanthem (rash from virus)

• 865 Viral illness with mcc
• 866 Viral illness without mcc

Convert B09 to ICD-9-CM

• 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

• Enanthema, viral B09
• 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 2022 2023 Billable/Specific Code

  Applicable To

  • Ventriculitis (cerebral) NOS
  • postexanthematous NEC B09
• Exanthem, exanthema - see also Rash
  • viral, virus B09
• Infection, infected, infective (opportunistic) B99.9
  ICD-10-CM Diagnosis Code B99.9

  Unspecified infectious disease

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • virus, viral NOS B34.9
    ICD-10-CM Diagnosis Code B34.9

    Viral infection, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

    Applicable To

    • Viremia NOS
    • exanthem NOS B09
• Keratitis (nodular) (nonulcerative) (simple) (zonular) H16.9
  ICD-10-CM Diagnosis Code H16.9

  Unspecified keratitis

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • in (due to)
    • exanthema B09 - see also Exanthem
• Keratoconjunctivitis H16.20-
  ICD-10-CM Diagnosis Code H16.20-

  Unspecified keratoconjunctivitis

  2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code

  Applicable To

  • Superficial keratitis with conjunctivitis NOS
  • in exanthema B09 - see also Exanthem
• Roseola B09

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.