G10 – Huntington's disease

ICD-10-CM 2027 diagnosis code · Systemic atrophies primarily affecting the central nervous system

Billable code

ICD-10-CM code G10

Code: G10 (claims format: G10)
Description: Huntington's 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: G10-G14 Systemic atrophies primarily affecting the central nervous system

Notes for G10

Applicable to:

Huntington's chorea
Huntington's dementia

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-)

Index terms for G10

Entries in the ICD-10-CM alphabetic index that lead to this code:

Frequently asked questions

What is ICD-10 code G10?

G10 is the ICD-10-CM code for huntington's disease, in the block G10-G14 (Systemic atrophies primarily affecting the central nervous system).

Is G10 a billable code?

Yes. G10 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

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.