G71.19 Other specified myotonic disorders
The ICD-10-CM code for Other specified myotonic disorders is G71.19 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- G70-G73: Diseases of myoneural junction and muscle (G70-G73)
- Category G71
- 35 codes (28 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to G71.19:
- Pseudomyotonia
- Von Eulenburg's disease
- Paramyotonia (congenita)
- Eulenburg's disease (congenital paramyotonia)
- Neuromyotonia (Isaacs)
- Disease, diseased › von Eulenburg's (congenital paramyotonia)
- Cataract (cortical) (immature) (incipient) › myotonic
- Disease, diseased › Eulenburg's (congenital paramyotonia)
Inclusion Terms
- Myotonia fluctuans
- Myotonia permanens
- Neuromyotonia [Isaacs]
- Paramyotonia congenita (of von Eulenburg)
- Pseudomyotonia
- Symptomatic myotonia
U.S. Hospital Utilization
- An estimated 230 U.S. inpatient stays in 2023 included G71.19 among the documented diagnoses.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
Dominant/nondominant side (TOC entry)a. Dominant/nondominant side ................................................................................................. 45
Pain - Category G89 (TOC entry)b. Pain - Category G89.............................................................................................................. 45
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026