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 period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Use Additional Code
Additional codes that should follow this code
- 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-)
Child Codes (2)
Also Known As / Clinical Terms
Frequently Asked Questions
What is ICD-10 code G20.A?
ICD-10-CM code G20.A represents "Parkinson's disease without dyskinesia". It 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 you should also code: 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.
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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.