G71.1Header code — not billable
Myotonic disorders
- Chapter
- 6. Diseases of the nervous system
- Category
- G71
- Effective date
- October 1, 2026
Related codes in category G71
G71Primary disorders of musclesG71.0Muscular dystrophyG71.00Muscular dystrophy, unspecifiedYesG71.01Duchenne or Becker muscular dystrophyYesG71.02Facioscapulohumeral muscular dystrophyYesG71.03Limb girdle muscular dystrophiesG71.031Autosomal dominant limb girdle muscular dystrophyYesG71.032Autosom recess limb girdle musc dyst d/t calpain-3 dysfnctYesG71.033Limb girdle muscular dystrophy due to dysferlin dysfunctionYesG71.034Limb girdle musc dyst due to sarcoglycan dysfunctionG71.0340Limb girdle musc dyst due to sarcoglycan dysfnct, unspYesG71.0341Limb girdle musc dyst due to alpha sarcoglycan dysfunctionYes
Frequently asked questions
What is ICD-10 code G71.1?
G71.1 is an ICD-10-CM diagnosis code for Myotonic disorders.
Is G71.1 a billable code?
No. G71.1 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is G71.1 in?
G71.1 falls under Chapter 6: Diseases of the nervous system.
When did G71.1 become effective?
G71.1 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to G71.1?
G71.1 belongs to category G71, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.