Non-Billable / Non-Specific Code
ICD-10-CM G20.B is the diagnosis code for Parkinson's disease with dyskinesia. This code falls under the section "Extrapyramidal and movement disorders" within Chapter 6 — Diseases of the nervous system (G00-G99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. 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.B. They are mutually exclusive:
Understanding where G20.B sits in the ICD-10-CM classification helps ensure proper coding:
No, G20.B is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
G20.B is the ICD-10-CM diagnosis code for "Parkinson's disease with dyskinesia". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of G20.B is G20 ("Parkinson's disease"). G20.B provides a more specific classification within this category.
G20.B is located in Section G20-G26 — "Extrapyramidal and movement disorders" within Chapter 6 of the ICD-10-CM Tabular List.
G20.B has 2 sub-code(s) that provide more specific detail: G20.B1, G20.B2.
Use G20.B when the patients documented diagnosis matches "Parkinson's disease with dyskinesia" 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 Parkinson's disease with dyskinesia is G20.B.
No, G20.B is non-billable. Use a more specific sub-code for primary diagnosis billing.
G20.B is in Chapter 6 of the ICD-10-CM Tabular List.
Type 1 Excludes for G20.B include: drug induced dystonia (G24.0-).
Yes, G20.B is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.