Secondary parkinsonism G21- >

Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as G21. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • dementia with Parkinsonism (
    ICD-10-CM Diagnosis Code G31.83

    Dementia with Lewy bodies

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Dementia with Parkinsonism
    • Lewy body dementia
    • Lewy body disease
    G31.83
    )
  • Huntington's disease (
    ICD-10-CM Diagnosis Code G10

    Huntington's disease

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Huntington's chorea
    • Huntington's dementia
    Code Also
    • dementia in other diseases classified elsewhere without behavioral disturbance (F02.80)
    G10
    )
  • Shy-Drager syndrome (
    ICD-10-CM Diagnosis Code G90.3

    Multi-system degeneration of the autonomic nervous system

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Neurogenic orthostatic hypotension [Shy-Drager]
    Type 1 Excludes
    • orthostatic hypotension NOS (I95.1)
    G90.3
    )
  • syphilitic Parkinsonism (
    ICD-10-CM Diagnosis Code A52.19

    Other symptomatic neurosyphilis

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Syphilitic parkinsonism
    A52.19
    )
Clinical Information
Codes