G21.2
BillableSecondary parkinsonism due to other external agents
G21.2 is the ICD-10-CM code for Secondary parkinsonism due to other external agents. It is a billable, specific code valid for reimbursement.
G00-G99 Diseases of the nervous system
What this means — in plain language
MedlinePlus · NIHParkinson's disease (PD) is a type of movement disorder . It happens when nerve cells in the brain don't produce enough of a brain chemical called dopamine. Sometimes it is genetic, but most cases do not seem to run in families. Exposure to chemicals in the environment might play a role. Symptoms begin gradually, often on one side of the body. Later they affect both sides. They include: Trembling of hands, arms,…
Read more about Parkinson's Disease at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Medications indicated for this condition
FDA labeling- AmantadineInfluenza A M2 Protein Inhibitor [EPC]›
- Carbidopa and LevodopaAromatic Amino Acid [EPC]›
- CarbidopaAromatic Amino Acid Decarboxylation Inhibitor [EPC]›
Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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