G23
Header — not billableOther degenerative diseases of basal ganglia
The ICD-10 code for other degenerative diseases of basal ganglia is G23.
G23 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 6 more specific codes below.
Clinical notes
Excludes2 (not included here)
An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.
- multi-system degeneration of the autonomic nervous system (G90.3)
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under G23
- G23.0Hallervorden-Spatz disease
- G23.1Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski]
- G23.2Striatonigral degeneration
- G23.3Hypomyelination with atrophy of the basal ganglia and cerebellum
- G23.8Other specified degenerative diseases of basal ganglia
- G23.9Degenerative disease of basal ganglia, unspecified
Related codes in this category
- G20Parkinson's diseasenon-billable header
- G21Secondary parkinsonismnon-billable header
- G24Dystonianon-billable header
- G25Other extrapyramidal and movement disordersnon-billable header
- G26Extrapyramidal and movement disorders in diseases classified elsewhere
- G23Other degenerative diseases of basal ganglianon-billable header