ICD-10-CM Code G21
Secondary parkinsonism
Non-Billable Code
Non-Billable means the code is not sufficient justification for admission to an acute care hospital when used a principal diagnosis. Use a child code to capture more detail.ICD Code G21 is a non-billable code. To code a diagnosis of this type, you must use one of the seven child codes of G21 that describes the diagnosis 'secondary parkinsonism' in more detail.
- G21 Secondary parkinsonism NON-BILLABLE
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- BILLABLE G21.0 Malignant neuroleptic syndrome
- BILLABLE G21.2 Secondary parkinsonism due to other external agents
- BILLABLE G21.3 Postencephalitic parkinsonism
- BILLABLE G21.4 Vascular parkinsonism
- BILLABLE G21.8 Other secondary parkinsonism
- BILLABLE G21.9 Secondary parkinsonism, unspecified
The ICD code G21 is used to code Parkinsonism
Parkinsonism is a clinical syndrome characterized by tremor, bradykinesia, rigidity, and postural instability. Parkinsonism shares symptoms found in Parkinson's disease, from which it is named; but parkinsonism is a symptom complex, and differs from Parkinson disease which is a progressive neurodegenerative illness. The underlying causes of parkinsonism are numerous, and diagnosis can be complex. The neurodegenerative condition Parkinson's disease (PD) is the most common cause of parkinsonism. However, a wide range of other etiologies may lead to a similar set of symptoms, including some toxins, a few metabolic diseases, and a handful of neurological conditions other than Parkinson's.
| Specialty: | Neurology |
| MeSH Code: | D020734 |
| ICD 9 Code: | 332 |
Coding Notes for G21 Info for medical coders on how to properly use this ICD-10 code
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Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here." - Dementia with Parkinsonism - instead, use code G31.83
- Huntington's disease - instead, use Code G10
- Shy-Drager syndrome - instead, use code G90.3
- Syphilitic Parkinsonism - instead, use code A52.19
ICD-10-CM Alphabetical Index References for 'G21 - Secondary parkinsonism'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code G21. Click on any term below to browse the alphabetical index.