G20.BCurrentCategory · further specificity required

Parkinson's disease with dyskinesia

Code-level instructions

Excludes 1

drug induced dystonia (G24.0-)

G20 · Inherited instructions

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-)

Excludes 2 · 8

Chapters 6 · Diseases of the nervous system (G00-G99)

Excludes 2

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)

More specific codes

G20.B1Parkinson's disease with dyskinesia, without mention of fluctuations G20.B2Parkinson's disease with dyskinesia, with fluctuations

Claims & coverage

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.

Official coding guidelines → · CMS ↗

First observed · 2023-10-01

Code history

Latest recorded change · FY2024

ChangedUnchanged

FY2024

Effective from 2023-10-01

Added

Parkinson's disease with dyskinesia

Category — select a more specific code

CDC/NCHS · FY2024

All editions (7)

All editions	Effective from	Code history
FY2024	2023-10-01	Added
FY2024 · 04-01	2024-04-01	No tabular change
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	No tabular change
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code-level instructions

Excludes 1

drug induced dystonia (G24.0-)

Inherited instructions

G20 · Parkinson's disease

Includes

Hemiparkinsonism
Idiopathic Parkinsonism or Parkinson's disease
Paralysis agitans
Primary Parkinsonism or Parkinson's disease

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-)

Chapters 6 · Diseases of the nervous system (G00-G99)

Excludes 2

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)

More specific codes

G20.B1Parkinson's disease with dyskinesia, without mention of fluctuationsBillable / specific G20.B2Parkinson's disease with dyskinesia, with fluctuationsBillable / specific

Related codes

Other entries in the same category; these are not automatic substitutes.

Code	Description	Category · further specificity required
G20.A	Parkinson's disease without dyskinesia	Category · further specificity required
G20.C	Parkinsonism, unspecified	Billable / specific

Official titles and instructions are preserved in their source language. Official sources ↗

G20.BCurrentCategory · further specificity required

Parkinson's disease with dyskinesia

Code-level instructions

Excludes 1

drug induced dystonia (G24.0-)

G20 · Inherited instructions

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-)

Excludes 2 · 8

Chapters 6 · Diseases of the nervous system (G00-G99)

Excludes 2

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)

More specific codes

G20.B1Parkinson's disease with dyskinesia, without mention of fluctuations G20.B2Parkinson's disease with dyskinesia, with fluctuations

Claims & coverage

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Official coding guidelines → · CMS ↗

First observed · 2023-10-01

Code history

Latest recorded change · FY2024

ChangedUnchanged

FY2024

Effective from 2023-10-01

Added

Parkinson's disease with dyskinesia

Category — select a more specific code

CDC/NCHS · FY2024

All editions (7)

All editions	Effective from	Code history
FY2024	2023-10-01	Added
FY2024 · 04-01	2024-04-01	No tabular change
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	No tabular change
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code-level instructions

Excludes 1

drug induced dystonia (G24.0-)

Inherited instructions

G20 · Parkinson's disease

Includes

Hemiparkinsonism
Idiopathic Parkinsonism or Parkinson's disease
Paralysis agitans
Primary Parkinsonism or Parkinson's disease

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-)

Chapters 6 · Diseases of the nervous system (G00-G99)

Excludes 2

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)

More specific codes

G20.B1Parkinson's disease with dyskinesia, without mention of fluctuationsBillable / specific G20.B2Parkinson's disease with dyskinesia, with fluctuationsBillable / specific

Related codes

Other entries in the same category; these are not automatic substitutes.

Code	Description	Category · further specificity required
G20.A	Parkinson's disease without dyskinesia	Category · further specificity required
G20.C	Parkinsonism, unspecified	Billable / specific

Official titles and instructions are preserved in their source language. Official sources ↗