1. 2023 ICD-10-CM Index
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2. 'P' Terms
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3. Index Terms Starting With 'P' (Parkinsonism)

Index Terms Starting With 'P' (Parkinsonism)

• Parkinsonism (idiopathic) (primary) G20

  ICD-10-CM Diagnosis Code G20

  Parkinson's disease

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

  Applicable To

  • Hemiparkinsonism
  • Idiopathic Parkinsonism or Parkinson's disease
  • Paralysis agitans
  • Parkinsonism or Parkinson's disease NOS
  • Primary Parkinsonism or Parkinson's disease

  Use Additional

  • code, if applicable, to identify:
  • dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4)
  • dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-)
  • dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3)
  • dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2)
  • dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0)
  • mild neurocognitive disorder due to known physiological condition (F06.7-)

  • arteriosclerotic G21.4
    ICD-10-CM Diagnosis Code G21.4

    Vascular parkinsonism

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • dementia G20
    - see also Dementia, in, diseases specified elsewhere
    ICD-10-CM Diagnosis Code G20

    Parkinson's disease

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

    Applicable To

    • Hemiparkinsonism
    • Idiopathic Parkinsonism or Parkinson's disease
    • Paralysis agitans
    • Parkinsonism or Parkinson's disease NOS
    • Primary Parkinsonism or Parkinson's disease

    Use Additional

    • code, if applicable, to identify:
    • dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4)
    • dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-)
    • dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3)
    • dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2)
    • dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0)
    • mild neurocognitive disorder due to known physiological condition (F06.7-)
    • with behavioral disturbance G20
      - see also Dementia, in, diseases specified elsewhere
      ICD-10-CM Diagnosis Code G20

      Parkinson's disease

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

      Applicable To

      • Hemiparkinsonism
      • Idiopathic Parkinsonism or Parkinson's disease
      • Paralysis agitans
      • Parkinsonism or Parkinson's disease NOS
      • Primary Parkinsonism or Parkinson's disease

      Use Additional

      • code, if applicable, to identify:
      • dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4)
      • dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-)
      • dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3)
      • dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2)
      • dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0)
      • mild neurocognitive disorder due to known physiological condition (F06.7-)
  • due to
    • drugs NEC G21.19
      ICD-10-CM Diagnosis Code G21.19

      Other drug induced secondary parkinsonism

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

      Applicable To

      • Other medication-induced parkinsonism

      Use Additional

      • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
      • neuroleptic G21.11
        ICD-10-CM Diagnosis Code G21.11

        Neuroleptic induced parkinsonism

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

        Type 1 Excludes

        • malignant neuroleptic syndrome (G21.0)

        Use Additional

        • code for adverse effect, if applicable, to identify drug (T43.3X5, T43.4X5, T43.505, T43.595)
  • medication-induced NEC G21.19
    ICD-10-CM Diagnosis Code G21.19

    Other drug induced secondary parkinsonism

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

    Applicable To

    • Other medication-induced parkinsonism

    Use Additional

    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  • neuroleptic induced G21.11
    ICD-10-CM Diagnosis Code G21.11

    Neuroleptic induced parkinsonism

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

    Type 1 Excludes

    • malignant neuroleptic syndrome (G21.0)

    Use Additional

    • code for adverse effect, if applicable, to identify drug (T43.3X5, T43.4X5, T43.505, T43.595)
  • postencephalitic G21.3
    ICD-10-CM Diagnosis Code G21.3

    Postencephalitic parkinsonism

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • secondary G21.9
    ICD-10-CM Diagnosis Code G21.9

    Secondary parkinsonism, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    • due to
      • arteriosclerosis G21.4
        ICD-10-CM Diagnosis Code G21.4

        Vascular parkinsonism

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
      • drugs NEC G21.19
        ICD-10-CM Diagnosis Code G21.19

        Other drug induced secondary parkinsonism

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

        Applicable To

        • Other medication-induced parkinsonism

        Use Additional

        • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
        • neuroleptic G21.11
          ICD-10-CM Diagnosis Code G21.11

          Neuroleptic induced parkinsonism

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

          Type 1 Excludes

          • malignant neuroleptic syndrome (G21.0)

          Use Additional

          • code for adverse effect, if applicable, to identify drug (T43.3X5, T43.4X5, T43.505, T43.595)
      • encephalitis G21.3
        ICD-10-CM Diagnosis Code G21.3

        Postencephalitic parkinsonism

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
      • external agents NEC G21.2
        ICD-10-CM Diagnosis Code G21.2

        Secondary parkinsonism due to other external agents

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

        Code First

        • (T51-T65) to identify external agent
      • syphilis A52.19
        ICD-10-CM Diagnosis Code A52.19

        Other symptomatic neurosyphilis

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

        Applicable To

        • Syphilitic parkinsonism
    • specified NEC G21.8
      ICD-10-CM Diagnosis Code G21.8

      Other secondary parkinsonism

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • syphilitic A52.19
    ICD-10-CM Diagnosis Code A52.19

    Other symptomatic neurosyphilis

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

    Applicable To

    • Syphilitic parkinsonism
  • treatment-induced NEC G21.19
    ICD-10-CM Diagnosis Code G21.19

    Other drug induced secondary parkinsonism

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

    Applicable To

    • Other medication-induced parkinsonism

    Use Additional

    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  • vascular G21.4
    ICD-10-CM Diagnosis Code G21.4

    Vascular parkinsonism

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • with neurogenic orthostatic hypotension G90.3
    (symptomatic)
    ICD-10-CM Diagnosis Code G90.3

    Multi-system degeneration of the autonomic nervous system

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

    Applicable To

    • Neurogenic orthostatic hypotension [Shy-Drager]

    Type 1 Excludes

    • orthostatic hypotension NOS (I95.1)