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2. ICD-10 Codes
3. Chapter - G00-G99
4. Section - G20-G26
5. Category - G20
6. G20.C

G20.C - Parkinsonism, unspecified

• Applicable to Parkinsonism, unspecified
• The 2025 edition of ICD10-CM G20.C became effective on October 1, 2024.
• This is the American ICD10-CM version of G20.C - other international versions of ICD10 G20.C may differ.
• G20.C is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• Parkinsonism, NOS

Type 1 Excludes

• Parkinson's disease NOS (G20.A1)
• Parkinson's disease with dyskinesia (G20.B-)
• Parkinson's disease without dyskinesia (G20.A-)
• secondary parkinsonism (G21.-)

The following codes above G20.C contain annotation back-references that may be applicable to G20.C:

• Chapter: G00-G99 - Diseases of the nervous system
• Section: G20-G26 - Extrapyramidal and movement disorders
• Category: G20 - Parkinson's disease

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.