AutoICD API

G20.C

Billable

Parkinsonism, unspecified

Parkinsonism, unspecified

Status

Billable / Specific

Block

G20-G26

Parent Code

G20

Coding Notes

Inclusion Terms

Alternative clinical terms for this condition

  • Parkinsonism, NOS

Excludes 1

Codes that cannot be used together with this code (mutual exclusion)

Excludes 2

Conditions not included here, but the patient may have both

Use Additional Code

Additional codes that should follow this code

Related Codes(2)
G20.A

Parkinson's disease without dyskinesia

G20.B

Parkinson's disease with dyskinesia

Also Known As / Clinical Terms(158)

SNOMED CT

UMLS

Clinical Terms

  • Functional neurological symptom disorder with parkinsonism
  • Hypokinetic parkinsonian dysphonia
  • parkinsonian syndrome
  • Amyotrophic lateral sclerosis with dementia
  • Parkinsonian disease
  • Hemiparkinsonism hemiatrophy syndrome
  • Parkinsonian Symptoms
  • Adult-onset dystonia parkinsonism
  • Mask-like facial expression
  • Hypokinetic-rigid syndrome
  • Parkinsonian pyramidal syndrome
  • Dystonia 12
  • Idiopathic Parkinsonism
  • Lytico Bodig disease
  • X-linked parkinsonism with spasticity syndrome
  • Parkinsonism due to heredodegenerative disorder
  • Shaking palsy
  • Familial Pick's disease
  • Primary Parkinsonism
  • Symptomatic parkinsonism
  • parkinsonian syndromes
  • parkinsonisms
  • Parkinsonism with alveolar hypoventilation and mental depression
  • PARKINSONIAN DIS
  • Waisman syndrome
  • Parkinsonian facies
  • Idiopathic Parkinson's disease
  • Disorders presenting primarily with parkinsonism
  • Rapid onset dystonia parkinsonism
  • Amyotrophic lateral sclerosis with parkinsonism
  • XDP - X-linked dystonia parkinsonism
  • PD - Parkinson's disease
  • Infantile dystonia parkinsonism
  • Young onset Parkinson disease
  • Early onset Parkinson's disease
  • Atypical Parkinsonism
  • Parkinsonian Disorders
  • Wilhelmsen-Lynch disease
  • Parkinsonism-dystonia infantile
  • PLA2G6 (phospholipase A2 group VI) related dystonia parkinsonism
  • Dystonia parkinsonism Paisan-Ruiz type
  • Amyotrophic lateral sclerosis, parkinsonism, dementia complex
  • Torsion dystonia parkinsonism Filipino type
  • Disinhibition-dementia-parkinsonism-amytrophy complex
  • Perry syndrome
  • Amyotrophic lateral sclerosis, parkinsonism, dementia complex of Kii Peninsula
  • Lubag
  • Guam disease
  • FTDP-17 - Frontotemporal dementia with parkinsonism 17
  • Parkinsonian tremor
  • X-linked torsion dystonia parkinsonism syndrome
  • PDALS (parkinsonism, dementia, amyotrophic lateral sclerosis) complex
  • Amyotrophic lateral sclerosis, parkinsonism, dementia of Guam syndrome
  • Paralysis agitans
  • Parkinsonism with polyneuropathy
  • DYT12 - dystonia 12
  • Functional parkinsonism
  • Parkinsons disease
  • Pallidopyramidal syndrome
  • Amyotrophic lateral sclerosis, parkinsonism, dementia complex of West New Guinea
  • XPDS - X-linked parkinsonism with spasticity syndrome
  • Frontotemporal dementia with parkinsonism-17
  • Atypical juvenile parkinsonism
  • X-linked dystonia parkinsonism
  • Dissociative neurological symptom disorder co-occurrent with parkinsonism
  • Parkinsonian Diseases
  • Young onset Parkinson's disease
  • Early onset parkinsonism and intellectual disability syndrome
  • Parkinson disease
  • Dopamine transporter deficiency syndrome
  • Early onset Parkinson disease
  • Parkinsonism, NOS
  • Parkinsonism (disorder)
  • Laxova Opitz syndrome
Frequently Asked Questions
What is the ICD-10 code for parkinsonism, unspecified?

The ICD-10-CM code for parkinsonism, unspecified is G20.C. The full clinical description is "Parkinsonism, unspecified". G20.C is a billable/specific code that can be used on insurance claims and medical billing.

What does ICD-10 code G20.C mean?

ICD-10-CM code G20.C represents “Parkinsonism, unspecified”. It is classified under Chapter 6: Diseases of the Nervous System and is a billable/specific code that can be used on a claim.

Is G20.C a billable code?

Yes, G20.C is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.

What chapter is G20.C in?

G20.C is in Chapter 6: Diseases of the Nervous System (codes G00-G99).

What codes cannot be used with G20.C?

G20.C has Excludes1 notes indicating codes that cannot be used together with it, including: Parkinson's disease NOS (G20.A1); Parkinson's disease with dyskinesia (G20.B-); Parkinson's disease without dyskinesia (G20.A-); and 1 more.

Are additional codes required with G20.C?

Yes, when using G20.C, also report: code, if applicable, to identify:; dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4); dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-); dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3); dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2); dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0); mild neurocognitive disorder due to known physiological condition (F06.7-).

What SNOMED CT codes does G20.C map to?

G20.C maps to 28 SNOMED CT concepts: 720466001, 230258005, 1259122001, 838276009, 1259123006, and 23 more. SNOMED CT is a clinical terminology used in electronic health records.

What are the UMLS CUIs for G20.C?

G20.C is linked to 1 UMLS Concept Unique Identifier: C0242422. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

How does G20.C relate to ICF functioning codes?

ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like parkinsonism, unspecified affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.

What is the ICD-11 equivalent of G20.C?

There is no direct ICD-11 mapping available for G20.C in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.

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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.