Paralysis agitans

This code represents Parkinson's disease, a progressive neurodegenerative disorder characterized by motor symptoms such as tremor, rigidity, bradykinesia, and postural instability. It results from the degeneration of dopamine-producing neurons in the substantia nigra.

Apply this code for documented cases of idiopathic Parkinson's disease. This diagnosis is typically made based on a neurological examination and the presence of characteristic motor symptoms. Documentation should clearly indicate a diagnosis of Parkinson's disease or paralysis agitans.

• Do not confuse with secondary parkinsonism or drug-induced parkinsonism, which have distinct codes.
• Code any associated complications or manifestations, such as dementia or dyskinesia, separately.
• Ensure the physician's documentation explicitly states "Parkinson's disease" or "paralysis agitans" to support this code.