ICD-10-CM G20.C is the diagnosis code for Parkinsonism, unspecified. This code falls under the section "Extrapyramidal and movement disorders" within Chapter 6 — Diseases of the nervous system (G00-G99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as G20.C. They are mutually exclusive:
Understanding where G20.C sits in the ICD-10-CM classification helps ensure proper coding:
Yes, G20.C is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
G20.C is the ICD-10-CM diagnosis code for "Parkinsonism, unspecified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of G20.C is G20 ("Parkinson's disease"). G20.C provides a more specific classification within this category.
G20.C is located in Section G20-G26 — "Extrapyramidal and movement disorders" within Chapter 6 of the ICD-10-CM Tabular List.
Use G20.C when the patients documented diagnosis matches "Parkinsonism, unspecified" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Parkinsonism, unspecified is G20.C.
Yes, G20.C can be used as a primary diagnosis code since it is billable and specific.
G20.C is in Chapter 6 of the ICD-10-CM Tabular List.
Type 1 Excludes for G20.C include: Parkinson's disease NOS (G20.A1); Parkinson's disease with dyskinesia (G20.B-); Parkinson's disease without dyskinesia (G20.A-) and more.
Yes, G20.C is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.