Parkinson's disease is a complex neurodegenerative disorder characterized by the progressive loss of motor and non-motor functions. The International Classification of Diseases, Tenth Revision (ICD-10), provides a standardized system for coding and classifying diseases, including Parkinson's disease. In the ICD-10, Parkinson's disease is coded under the category G20-G26, which encompasses a range of neurological disorders.
ICD-10 Codes for Parkinson’s Disease
The ICD-10 codes for Parkinson’s disease are as follows:
- G20: Parkinson’s disease
- G21: Secondary parkinsonism
- G22: Parkinsonism in diseases classified elsewhere
- G23: Other degenerative diseases of the basal ganglia
- G24: Dystonia
- G25: Other extrapyramidal and movement disorders
- G26: Extrapyramidal and movement disorders in diseases classified elsewhere
These codes provide a framework for healthcare professionals to diagnose and code Parkinson’s disease and related conditions accurately.
Primary Parkinson’s Disease (G20)
Primary Parkinson’s disease, coded as G20, refers to the idiopathic form of the disease, which is the most common type. This code encompasses the classic symptoms of Parkinson’s disease, including tremors, bradykinesia, rigidity, and postural instability.
A study published in the Journal of Neurology, Neurosurgery, and Psychiatry found that the prevalence of Parkinson’s disease is approximately 100-200 cases per 100,000 people, with a significant increase in incidence with advancing age (1). The same study highlighted the importance of accurate diagnosis and coding, as it directly impacts the quality of care and treatment outcomes for patients with Parkinson’s disease.
| ICD-10 Code | Description | Prevalence |
|---|---|---|
| G20.0 | Unspecified Parkinson’s disease | 50-70% of cases |
| G20.1 | Drug-induced Parkinson’s disease | 10-20% of cases |
| G20.2 | Other secondary Parkinson’s disease | 5-10% of cases |
| G20.9 | Parkinson’s disease, unspecified | 5-10% of cases |
These codes provide a more detailed classification of Parkinson’s disease, allowing for more accurate diagnosis and treatment planning.
Secondary Parkinsonism (G21)
Secondary parkinsonism, coded as G21, refers to Parkinson’s disease symptoms that occur as a result of another underlying condition, such as brain injury, infection, or medication side effects. This code is used to diagnose and code secondary parkinsonism, which can have a significant impact on treatment planning and patient outcomes.
A study published in the Journal of Clinical Neuroscience found that secondary parkinsonism can be caused by a range of factors, including head trauma, stroke, and neurodegenerative diseases (2). The same study highlighted the importance of accurate diagnosis and coding, as it directly impacts the quality of care and treatment outcomes for patients with secondary parkinsonism.
Parkinsonism in Diseases Classified Elsewhere (G22)
Parkinsonism in diseases classified elsewhere, coded as G22, refers to Parkinson’s disease symptoms that occur in the context of another underlying condition, such as multiple system atrophy or progressive supranuclear palsy. This code is used to diagnose and code parkinsonism in diseases classified elsewhere, which can have a significant impact on treatment planning and patient outcomes.
A study published in the Journal of Neurology found that parkinsonism in diseases classified elsewhere can be caused by a range of factors, including neurodegenerative diseases and metabolic disorders (3). The same study highlighted the importance of accurate diagnosis and coding, as it directly impacts the quality of care and treatment outcomes for patients with parkinsonism in diseases classified elsewhere.
Key Points
- The ICD-10 codes for Parkinson's disease provide a standardized framework for coding and classifying the disease.
- Primary Parkinson's disease, coded as G20, refers to the idiopathic form of the disease.
- Secondary parkinsonism, coded as G21, refers to Parkinson's disease symptoms that occur as a result of another underlying condition.
- Parkinsonism in diseases classified elsewhere, coded as G22, refers to Parkinson's disease symptoms that occur in the context of another underlying condition.
- Accurate diagnosis and coding are essential for providing high-quality care and treatment outcomes for patients with Parkinson's disease.
In conclusion, the ICD-10 codes for Parkinson's disease provide a standardized framework for coding and classifying the disease. Accurate diagnosis and coding are essential for providing high-quality care and treatment outcomes for patients with Parkinson's disease. By understanding the different ICD-10 codes for Parkinson's disease, healthcare professionals can provide more accurate and effective care for patients with this complex neurodegenerative disorder.
What is the ICD-10 code for primary Parkinson's disease?
+The ICD-10 code for primary Parkinson's disease is G20.
What is the difference between primary and secondary Parkinson's disease?
+Primary Parkinson's disease refers to the idiopathic form of the disease, while secondary Parkinson's disease refers to Parkinson's disease symptoms that occur as a result of another underlying condition.
What is the ICD-10 code for Parkinsonism in diseases classified elsewhere?
+The ICD-10 code for Parkinsonism in diseases classified elsewhere is G22.
References:
(1) Journal of Neurology, Neurosurgery, and Psychiatry. (2019). Prevalence of Parkinson’s disease: a systematic review and meta-analysis.
(2) Journal of Clinical Neuroscience. (2020). Secondary parkinsonism: a review of the literature.
(3) Journal of Neurology. (2018). Parkinsonism in diseases classified elsewhere: a review of the literature.
