2024 ICD-10-CM Diagnosis Code B27.12

Cytomegaloviral mononucleosis with meningitis

• B27.12 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 B27.12 became effective on October 1, 2023.
• This is the American ICD-10-CM version of B27.12 – other international versions of ICD-10 B27.12 may differ.

The following code(s) above B27.12 contain annotation back-references

 that may be applicable to B27.12:

• A00-B99  Certain infectious and parasitic diseases
• B27  Infectious mononucleosis

Approximate Synonyms

• Cytomegalovirus (cmv) mononucleosis with meningitis
• Meningitis due to cytomegaloviral mononucleosis

ICD-10-CM B27.12 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

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

Convert B27.12 to ICD-9-CMCode 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
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change
• 2024 (effective 10/1/2023): No change

Diagnosis Index entries containing back-references to B27.12:

• Infection, infected, infective (opportunistic) B99.9
  • cytomegalovirus, cytomegaloviralB25.9
    • mononucleosisB27.10
      • with
        • meningitis B27.12
• Mononucleosis, infectiousB27.90
  • cytomegaloviralB27.10
    • with
      • meningitis B27.12