G20.A
Non-billableParkinson's disease without dyskinesia
Parkinson's disease without dyskinesia
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
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 (2)
Also Known As / Clinical Terms(1)
Frequently Asked Questions
What is the ICD-10 code for parkinson's disease without dyskinesia?
The ICD-10-CM code for parkinson's disease without dyskinesia is G20.A. The full clinical description is "Parkinson's disease without dyskinesia". G20.A is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code G20.A mean?
ICD-10-CM code G20.A represents “Parkinson's disease without dyskinesia”. 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 a billable code?
No, G20.A is a non-billable header code. You need to use one of its more specific child codes for billing. There are 2 child codes under G20.A.
What chapter is G20.A in?
G20.A is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What are the subcategories under G20.A?
G20.A has 2 child codes, including: G20.A1 (Parkinson's dis w/o dyskinesia, w/o mention of fluctuations), G20.A2 (Parkinson's disease without dyskinesia, with fluctuations).
Are additional codes required with G20.A?
Yes, when using G20.A, 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.A?
G20.A is linked to 1 UMLS Concept Unique Identifier: C5819118. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does G20.A relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like parkinson's disease without dyskinesia 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.A?
There is no direct ICD-11 mapping available for G20.A 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.
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
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.