U.S. ICD-10-CM · FY 2027

G10 ICD-10-CM Code: Huntington's disease

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

G10

Huntington's disease

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where G10 sits

  1. 1

    Chapter 6

    Diseases of the nervous system (G00-G99)

  2. 2

    Section

    Systemic atrophies primarily affecting the central nervous system (G10-G14)

  3. 3

    Category G10

    Huntington's disease

  4. 4

    Code G10

    Huntington's disease

Documentation details

Notes for this code

Inclusion terms

  • Huntington's chorea
  • Huntington's dementia

Code first

No “code first” instruction is listed for G10.

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-)

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for G10.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for G10.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code G10 mean?

G10 is the FY 2027 U.S. ICD-10-CM code for “Huntington's disease.”

Is G10 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, G10 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is G10 located in ICD-10-CM?

G10 is listed in Chapter 6, Diseases of the nervous system (G00-G99), within Systemic atrophies primarily affecting the central nervous system (G10-G14) (G10–G14), under category G10, Huntington's disease.

What coding notes are listed for G10?

Its listed inclusion terms are Huntington's chorea; Huntington's dementia. No code-first instruction is listed. Additional-code instructions: 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-). No Excludes1 note is listed. No Excludes2 note is listed.

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