G23.0 – Hallervorden-Spatz disease
ICD-10-CM 2027 diagnosis code · Extrapyramidal and movement disorders
ICD-10-CM code
G23.0
- Code
G23.0(claims format:G230)- Description
- Hallervorden-Spatz disease
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 6. Diseases of the nervous system (G00-G99)
- Block
- G20-G26 Extrapyramidal and movement disorders
- Parent codes
- G23
Notes for G23.0
Applicable to:
- Pigmentary pallidal degeneration
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
G23 – Other degenerative diseases of basal ganglia
Excludes2 (not included here):
- multi-system degeneration of the autonomic nervous system (G90.3)
Index terms for G23.0
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in G23
- G23.1 – Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski]Billable
- G23.2 – Striatonigral degenerationBillable
- G23.3 – Hypomyelination with atrophy of the basal ganglia and cerebellumBillable
- G23.8 – Other specified degenerative diseases of basal gangliaBillable
- G23.9 – Degenerative disease of basal ganglia, unspecifiedBillable
Frequently asked questions
What is ICD-10 code G23.0?
G23.0 is the ICD-10-CM code for hallervorden-Spatz disease, in the block G20-G26 (Extrapyramidal and movement disorders).
Is G23.0 a billable code?
Yes. G23.0 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does G23.0 belong to?
It belongs to category G23 – Other degenerative diseases of basal ganglia.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.