DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

G10 diagnosis code · Billable category · FY2027

G10 Huntington's disease

  • Billable
  • CC
  • HCC 200
  • POA reported

G10 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

CC / MCC
CC
MS-DRG
056-057
HCC V28
200
POA
Reported
Code Editor
–
Index entries
10

Instructions

At G10

Inclusion terms

  • Huntington's chorea
  • Huntington's dementia

Use additional code

Notes that also apply

Chapter 6 instructions (Excludes2 8): printed on the chapter 6 page.

Index entries

  • Huntington's disease or chorea → G10
  • Chorea (chronic) (gravis) (posthemiplegic) (senile) (spasmodic)hereditary → G10
  • Chorea (chronic) (gravis) (posthemiplegic) (senile) (spasmodic)Huntington's → G10
  • Disease, diseasedHuntington's → G10
  • Huntington's disease or choreawith dementia → G10 [F02.80]
  • Chorea (chronic) (gravis) (posthemiplegic) (senile) (spasmodic)progressivehereditary → G10
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)in (due to)Huntington's disease or chorea → G10 [F02.80]
  • Disease, diseasedHuntington'swith dementia → G10 [F02.80]
  • Huntington's disease or choreawith dementiawith behavioral disturbance → G10 [F02.81-]
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)in (due to)Huntington's disease or choreawith behavioral disturbance → G10 [F02.81-]

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for G10
CC / MCCCC
PDX exclusion list0672 (67 codes)
Appendix BMDC 01 Diseases and Disorders of the Nervous System, MS-DRG 056-057 (Degenerative Nervous System Disorders with MCC…)
Code Editor–
POAReported
HCC V28HCC 200 Friedreich and Other Hereditary Ataxias; Huntington Disease

CC as a secondary diagnosis, not when the principal diagnosis is on its PDX exclusion list.

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy