G71.1
⚠ Non-billable
Myotonic disorders
ICD-10-CM · FY2026 · Diseases of the Nervous System
Code
G71.1
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Nervous System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code G71.1?
ICD-10-CM code G71.1 represents Myotonic disorders. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Nervous System chapter, effective October 1, 2025 – September 30, 2026.
Is G71.1 billable?
No. G71.1 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is G71.1 in?
G71.1 belongs to the Diseases of the Nervous System chapter (G00–G99) of ICD-10-CM.
Related codes in the G71 category
G71
Primary disorders of muscles
Non-billable
G71.0
Muscular dystrophy
Non-billable
G71.2
Congenital myopathies
Non-billable
G71.3
Mitochondrial myopathy, not elsewhere classified
Billable
G71.8
Other primary disorders of muscles
Billable
G71.9
Primary disorder of muscle, unspecified
Billable
G71.00
Muscular dystrophy, unspecified
Billable
G71.01
Duchenne or Becker muscular dystrophy
Billable
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