G20

Non-Billable

ChapterG00–G99

Rankcategory

Official Description

Parkinson's disease

Use a more specific code (1 billable, 2 non-billable)

Metadata & Insights

Excludes2(Not included here. Code separately if applicable.)

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)

Includes

Use Additional 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-)

BillableHas subcodes

CH6Diseases of the nervous system (G00-G99)

G20-G26Extrapyramidal and movement disorders (G20-G26)

G20Parkinson's diseaseNot billable

G20.AParkinson's disease without dyskinesiaSubcodes

G20.BParkinson's disease with dyskinesiaSubcodes

G20.CParkinsonism, unspecifiedBillable

The following parent sections contain instructions or notes that apply to G20:

chapterCH6

Diseases of the nervous system (G00-G99)

2026

No direct MS-DRG triggers identified.

Find surgical and procedural codes related to Parkinson's disease.