ICD-10-CM Codes
G00-G99
G20-G26
G23-
2023 ICD-10-CM Diagnosis Code G23

2023 ICD-10-CM Diagnosis Code G23

Other degenerative diseases of basal ganglia

2016

2017

2018

2019

2020

2021

2022

2023

Non-Billable/Non-Specific Code

G23 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2023 edition of ICD-10-CM G23 became effective on October 1, 2022.
This is the American ICD-10-CM version of G23 - other international versions of ICD-10 G23 may differ.

Type 2 Excludes

Type 2 Excludes Help

A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (G23) and the excluded code together.

multi-system degeneration of the autonomic nervous system (
ICD-10-CM Diagnosis Code G90.3
Multi-system degeneration of the autonomic nervous system
Applicable To
- Neurogenic orthostatic hypotension [Shy-Drager]
Type 1 Excludes
- orthostatic hypotension NOS (I95.1)
G90.3
)

The following code(s) above G23 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to G23:

G00-G99
2023 ICD-10-CM Range G00-G99
Diseases of the nervous system
Type 2 Excludes
- 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)
Diseases of the nervous system

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

ICD-10-CM Codes Adjacent To G23

G21 Secondary parkinsonism

G21.0 Malignant neuroleptic syndrome

G21.1 Other drug-induced secondary parkinsonism

G21.11 Neuroleptic induced parkinsonism

G21.19 Other drug induced secondary parkinsonism

G21.2 Secondary parkinsonism due to other external agents

G21.3 Postencephalitic parkinsonism

G21.4 Vascular parkinsonism

G21.8 Other secondary parkinsonism

G21.9 Secondary parkinsonism, unspecified

G23 Other degenerative diseases of basal ganglia

G23.0 Hallervorden-Spatz disease

G23.1 Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski]

G23.2 Striatonigral degeneration

G23.8 Other specified degenerative diseases of basal ganglia

G23.9 Degenerative disease of basal ganglia, unspecified

G24 Dystonia

G24.0 Drug induced dystonia

G24.01 Drug induced subacute dyskinesia

G24.02 Drug induced acute dystonia

G24.09 Other drug induced dystonia

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2023 ICD-10-CM Diagnosis Code G23

Other degenerative diseases of basal ganglia

Multi-system degeneration of the autonomic nervous system

Diseases of the nervous system