G20
Non-billableParkinson's disease
Parkinson's disease
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Hemiparkinsonism
- Idiopathic Parkinsonism or Parkinson's disease
- Paralysis agitans
- Primary Parkinsonism or Parkinson's disease
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
Use Additional Code
Additional codes that should follow this code
- code, if applicable, to identify:
- •dementia with anxiety, A4, B4, C4)F02.84, F02, F02, F02
- •dementia with behavioral disturbance, A1-, B1-, C1-)F02.81, F02, F02, F02
- •dementia with mood disturbance, A3, B3, C3)F02.83, F02, F02, F02
- •dementia with psychotic disturbance, A2, B2, C2)F02.82, F02, F02, F02
- •dementia without behavioral disturbance, A0, B0, C0)F02.80, F02, F02, F02
- •mild neurocognitive disorder due to known physiological conditionF06.7
Child Codes (3)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(56)
UMLS
- Disease Parkinson'sC0030567
- IDIOPATHIC PARKINSON DISC0030567
- IDIOPATHIC PARKINSONS DISC0030567
- Idiopathic Parkinson DiseaseC0030567
- Idiopathic Parkinson's DiseaseC0030567
- Idiopathic Parkinson's diseaseC0030567
- Idiopathic ParkinsonismC0030567
- LEWY BODY PARKINSON DISC0030567
- Lewy Body Parkinson DiseaseC0030567
- Lewy Body Parkinson's DiseaseC0030567
- PARKINSON DISC0030567
- PARKINSON DIS IDIOPATHICC0030567
- PARKINSON DISEASEC0030567
- PARKINSONS DISC0030567
- PARKINSONS DIS IDIOPATHICC0030567
- PARKINSONS DIS LEWY BODYC0030567
- PD - Parkinson's diseaseC0030567
- Paralysis AgitansC0030567
- Paralysis agitansC0030567
- Parkinson DiseaseC0030567
- Parkinson Disease, IdiopathicC0030567
- Parkinson diseaseC0030567
- Parkinson disease (PD)C0030567
- Parkinson's DiseaseC0030567
- Parkinson's Disease, IdiopathicC0030567
- Parkinson's Disease, Lewy BodyC0030567
- Parkinson's diseaseC0030567
- Parkinson's disease (disorder)C0030567
- Parkinson's disease NOSC0030567
- Parkinson's syndromeC0030567
- Parkinsonism, PrimaryC0030567
- Parkinsons diseaseC0030567
- Primary ParkinsonismC0030567
- Primary parkinsonismC0030567
- Shaking PalsyC0030567
- Shaking palsyC0030567
- bodies disease lewy parkinson'sC0030567
- disease disorders parkinson'sC0030567
- disease idiopathic parkinsonsC0030567
- disease parkinson sC0030567
- disease parkinsons'sC0030567
- diseases parkinsonC0030567
- diseases parkinson'sC0030567
- diseases parkinsonsC0030567
- idiopathic parkinson diseaseC0030567
- idiopathic parkinson's diseaseC0030567
- palsy shakingC0030567
- paralysis agitansC0030567
- parkinson disease lewy bodyC0030567
- parkinson s diseaseC0030567
- parkinson's syndromeC0030567
- shaking palsyC0030567
- syndrome parkinson'sC0030567
- HemiparkinsonismC1399358
- Idiopathic Parkinsonism or Parkinson's diseaseC0865475
- Primary Parkinsonism or Parkinson's diseaseC0865476
Frequently Asked Questions
What is the ICD-10 code for parkinson's disease?
The ICD-10-CM code for parkinson's disease is G20. The full clinical description is "Parkinson's disease". G20 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code G20 mean?
ICD-10-CM code G20 represents “Parkinson's disease”. It is classified under Chapter 6: Diseases of the Nervous System and is a non-billable header code. Use a more specific child code for billing purposes.
Is G20 a billable code?
No, G20 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under G20.
What chapter is G20 in?
G20 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What are the subcategories under G20?
G20 has 3 child codes, including: G20.A (Parkinson's disease without dyskinesia), G20.B (Parkinson's disease with dyskinesia), G20.C (Parkinsonism, unspecified).
Are additional codes required with G20?
Yes, when using G20, 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 are the UMLS CUIs for G20?
G20 is linked to 4 UMLS Concept Unique Identifiers: C0030567, C1399358, C0865475, C0865476. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does G20 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like parkinson's disease 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?
G20 maps to the ICD-11 code: 8A00.0Z (Parkinson disease, unspecified).
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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.