G24.1

Genetic torsion dystonia

FY2027Chapter 6: Diseases of the nervous system/G20–G26 Extrapyramidal and movement disorders

BillableComplete code, valid to report

G24.1 (also written G241) is a billable ICD-10-CM diagnosis code for genetic torsion dystonia. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 10 codes in category G24 (Dystonia). The Alphabetic Index lists it under 13 entries. Its coding notes include 9 Excludes2 entries.

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from G24 Dystonia
  • athetoid cerebral palsy (G80.3)
Also from chapter/block level (8 notes)
Inherited from Chapter 6 Diseases of the nervous system
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Care settings

How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.

Home Health Primary

Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the Neuro Rehabilitation clinical group.

Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026

IPF Primary

IPF MS-DRG adjustment. A principal diagnosis of this code groups to one of these MS-DRGs. Which one depends on other facts of the stay, so the factor is a range:

MS-DRGDescriptionFactor
056Degenerative nervous system disorders w MCC1.12
057Degenerative nervous system disorders w/o MCC1.11
A principal diagnosis that groups to none of the 19 designated MS-DRGs gets no MS-DRG adjustment. Otherwise the claim still receives the federal per diem base rate and the other adjustments.

Source: CMS IPF PPS FY 2027 final rule (CMS-1847-F), Addendum A; code lists from the CMS MS-DRG Definitions Manual v44; effective for discharges on or after October 1, 2026

Includes

Further defines or gives examples of the content of the category.

Inherited from G24 Dystonia
  • dyskinesia

Inclusion terms

Conditions classified to this code.

This code
  • Dystonia deformans progressiva
  • Dystonia musculorum deformans
  • Familial torsion dystonia
  • Idiopathic familial dystonia
  • Idiopathic (torsion) dystonia NOS
  • (Schwalbe-) Ziehen-Oppenheim disease

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 13 entries

Show 1 more