• Mastoiditis (coalescent) (hemorrhagic) (suppurative) H70.9-
    ICD-10-CM Diagnosis Code H70.9-

    Unspecified mastoiditis

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code

    • acute, subacute H70.00-
      ICD-10-CM Diagnosis Code H70.00-

      Acute mastoiditis without complications

        2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      • complicated NEC H70.09-
        ICD-10-CM Diagnosis Code H70.09-

        Acute mastoiditis with other complications

          2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      • subperiosteal H70.01-
        ICD-10-CM Diagnosis Code H70.01-

        Subperiosteal abscess of mastoid

          2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    • chronic H70.1-
      (necrotic) (recurrent)
      ICD-10-CM Diagnosis Code H70.1-

      Chronic mastoiditis

        2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      Applicable To
      • Caries of mastoid
      • Fistula of mastoid
      Type 1 Excludes
      • tuberculous mastoiditis (A18.03)
    • in (due to)
      • infectious disease NEC B99
        ICD-10-CM Diagnosis Code B99

        Other and unspecified infectious diseases

          2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      • parasitic disease NEC B89
        ICD-10-CM Diagnosis Code B89

        Unspecified parasitic disease

          2016 2017 2018 2019 2020 Billable/Specific Code
      • tuberculosis A18.03
        ICD-10-CM Diagnosis Code A18.03

        Tuberculosis of other bones

          2016 2017 2018 2019 2020 Billable/Specific Code
        Applicable To
        • Tuberculous mastoiditis
        • Tuberculous osteomyelitis
    • petrositis - see Petrositis
    • postauricular fistula - see Fistula, postauricular
    • specified NEC H70.89-
      ICD-10-CM Diagnosis Code H70.89-

      Other mastoiditis and related conditions

        2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    • tuberculous A18.03
      ICD-10-CM Diagnosis Code A18.03

      Tuberculosis of other bones

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Tuberculous mastoiditis
      • Tuberculous osteomyelitis