G20.C
BillableParkinsonism, unspecified
G20.C is the ICD-10-CM code for Parkinsonism, unspecified. 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.
Includes
- •Parkinsonism, NOS
Excludes1 — not coded here
Medications indicated for this condition
FDA labeling- AmantadineInfluenza A M2 Protein Inhibitor [EPC]›
- Carbidopa and LevodopaAromatic Amino Acid [EPC]›
- Diphenhydramine›
- RopiniroleNonergot Dopamine Agonist [EPC]›
- Pramipexole›
- Rasagiline›
- CarbidopaAromatic Amino Acid Decarboxylation Inhibitor [EPC]›
- Carbidopa, Levodopa and EntacaponeAromatic Amino Acid [EPC]›
- Selegiline›
- Benztropine›
- Bromocriptine›
- EntacaponeCatechol-O-Methyltransferase Inhibitor [EPC]›
Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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