ICD-10-CM Diagnosis Code (2025)
Official Description for G71.1
Myotonic disorders
Coding Notes & Guidelines for G71.1
Use Additional Code
code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Inclusion Terms
- Dystrophia myotonica [Steinert]
- Myotonia atrophica
- Myotonic dystrophy
- Proximal myotonic myopathy (PROMM)
- Steinert disease
Inclusion Terms
- Acetazolamide responsive myotonia congenita
- Dominant myotonia congenita [Thomsen disease]
- Myotonia levior
- Recessive myotonia congenita [Becker disease]
Inclusion Terms
- Chondrodystrophic myotonia
- Congenital myotonic chondrodystrophy
- Schwartz-Jampel disease
Inclusion Terms
- Myotonia fluctuans
- Myotonia permanens
- Neuromyotonia [Isaacs]
- Paramyotonia congenita (of von Eulenburg)
- Pseudomyotonia
- Symptomatic myotonia
Parent Code (Less Specific):
About ICD-10-CM Code G71.1 (Myotonic disorders)
ICD-10-CM code G71.1 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM G71.1 became effective on October 1, 2024.
This page provides detailed information about G71.1 - Myotonic disorders. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Myotonic disorders.