Patient presents with clinical features consistent with a diagnosis of Parkinsonism.  Symptoms include bradykinesia, rigidity, tremor at rest, and postural instability.  The onset and progression of these Parkinson's disease symptoms were evaluated, including the presence of any Parkinson's disease-related non-motor symptoms such as sleep disturbances, cognitive impairment, or autonomic dysfunction.  Differential diagnosis considered other parkinsonian syndromes such as drug-induced parkinsonism, progressive supranuclear palsy, and multiple system atrophy.  The patient's medical history, family history, and medication history were reviewed.  A neurological examination revealed the characteristic signs of Parkinson's disease, including masked facies, decreased arm swing, and shuffling gait.  Diagnostic testing, including DaTscan or other imaging if deemed necessary, may be considered to further evaluate and differentiate the parkinsonian syndrome.  The Unified Parkinson's Disease Rating Scale (UPDRS) was used to assess the severity of motor symptoms and functional disability.  Based on the clinical presentation and examination findings, the diagnosis of Parkinsonism is established.  Treatment plan includes Parkinson's disease medications such as levodopa, dopamine agonists, or MAO-B inhibitors, tailored to the individual patient's needs and symptom profile.  Patient education on Parkinson's disease management, including medication management, physical therapy, occupational therapy, and support groups, was provided.  Follow-up appointments were scheduled to monitor disease progression, adjust treatment as needed, and assess treatment response.  ICD-10 code G20 Parkinson's disease and related CPT codes for evaluation and management were used for billing and coding purposes.