2024 ICD-10-CM Diagnosis Code G20.C
Parkinsonism, unspecified
- ICD-10-CM Code:
- G20.C
- ICD-10 Code for:
- Parkinsonism, unspecified
- Is Billable?
- Yes - Valid for Submission
- Code Navigator:
G20.C is a billable diagnosis code used to specify a medical diagnosis of parkinsonism, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.
Unspecified diagnosis codes like G20.C are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Adult-onset dystonia parkinsonism
- Amyotrophic lateral sclerosis with dementia
- Amyotrophic lateral sclerosis with dementia
- Amyotrophic lateral sclerosis with parkinsonism
- Amyotrophic lateral sclerosis, parkinsonism, dementia complex
- Amyotrophic lateral sclerosis, parkinsonism, dementia complex of Kii Peninsula
- Amyotrophic lateral sclerosis, parkinsonism, dementia complex of West New Guinea
- Atypical juvenile parkinsonism
- Atypical Parkinsonism
- Dissociative neurological symptom disorder co-occurrent with Parkinsonism
- Dopamine transporter deficiency syndrome
- Early onset parkinsonism and intellectual disability syndrome
- Frontotemporal dementia with parkinsonism-17
- Functional parkinsonism
- Hemiparkinsonism hemiatrophy syndrome
- Hypokinetic parkinsonian dysphonia
- Parkinsonian facies
- Parkinsonian pyramidal syndrome
- Parkinsonian tremor
- Parkinsonism
- Parkinsonism due to heredodegenerative disorder
- Parkinson's disease
- Parkinson's disease
- Perry syndrome
- Rapid onset dystonia parkinsonism
- Symptomatic parkinsonism
- X-linked dystonia parkinsonism
- X-linked parkinsonism with spasticity syndrome
- Young onset Parkinson disease
- Young onset Parkinson disease
New 2024 ICD-10-CM Code
G20.C is new to ICD-10-CM code set for the FY 2024, effective October 1, 2023. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2023. This is a new and revised code for the FY 2024 (October 1, 2023 - September 30, 2024).
Tabular List of Diseases and Injuries
The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.
Inclusion Terms
Inclusion TermsThese terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Parkinsonism, NOS
Type 1 Excludes
Type 1 ExcludesA type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and Injuries References
The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).
- - Dementia (degenerative (primary)) (old age) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) - F03.90
- - with
- - Parkinsonism - See Also: Dementia, in, diseases specified elsewhere; - G20.C
- - with behavioral disturbance - See Also: Dementia, in, diseases specified elsewhere; - G20.C
- - Parkinsonism - See Also: Dementia, in, diseases specified elsewhere; - G20.C
- - in (due to)
- - paralysis agitans - See Also: Dementia, in, diseases specified elsewhere; - G20.C
- - with behavioral disturbance - See Also: Dementia, in, diseases specified elsewhere; - G20.C
- - paralysis agitans - See Also: Dementia, in, diseases specified elsewhere; - G20.C
- - with
- - Hemiparkinsonism - G20.C
- - Paralysis, paralytic (complete) (incomplete) - G83.9
- - agitans - See Also: Parkinsonism; - G20.C
- - Parkinsonism (idiopathic) (primary) - G20.C
- - dementia - See Also: Dementia, in, diseases specified elsewhere; - G20.C
- - with behavioral disturbance - See Also: Dementia, in, diseases specified elsewhere; - G20.C
- - dementia - See Also: Dementia, in, diseases specified elsewhere; - G20.C
- - Pyramidopallidonigral syndrome - G20.C
- - Syndrome - See Also: Disease;
- - pyramidopallidonigral - G20.C
Replacement Code
G20C replaces the following previously assigned ICD-10-CM code(s):
- G20 - Parkinson's disease
Code History
- FY 2024 - Code Added, effective from 10/1/2023 through 9/30/2024