2021 ICD-10-CM Code G71.1

Myotonic disorders

Version 2021

Not Valid for Submission

G71.1 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of myotonic disorders. The code is not specific and is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

ICD-10:G71.1
Short Description:Myotonic disorders
Long Description:Myotonic disorders

Code Classification

Specific Coding for Myotonic disorders

Non-specific codes like G71.1 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for myotonic disorders:

  • BILLABLE CODE - Use G71.11 for Myotonic muscular dystrophy
  • BILLABLE CODE - Use G71.12 for Myotonia congenita
  • BILLABLE CODE - Use G71.13 for Myotonic chondrodystrophy
  • BILLABLE CODE - Use G71.14 for Drug induced myotonia
  • BILLABLE CODE - Use G71.19 for Other specified myotonic disorders

Clinical Information

Information for Patients


Muscle Disorders

Also called: Myopathy

Your muscles help you move and help your body work. Different types of muscles have different jobs. There are many problems that can affect muscles. Muscle disorders can cause weakness, pain or even paralysis.

Causes of muscle disorders include

Sometimes the cause is not known.


[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)