Limb Girdle Muscular Dystrophies (LGMD) Subtype 21/R9

Subcategory G71.03, Limb girdle muscular dystrophies, has been expanded and a new code has been created to identify limb girdle muscular dystrophy due to fukutin related protein dysfunction (G71.036).Limb girdle muscular dystrophy (LGMD) subtype 21/R9, otherwise known as LGMD R9 FKRP-related, is a rare type of muscular dystrophy. It is caused by a genetic mutation in the fukutin-related protein (FKRP) gene, resulting in muscle loss and weakness in the hips, upper legs, upper arms, and shoulders. The FKRP gene is vital to muscle function and is mostly found in skeletal muscles but may also involve cardiac...

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Note:  The following article synopsis was NOT provided by the AHA. It was created by Find-A-Code/innoviHealth.

Article Overview

This article covers an ICD-10-CM expansion related to limb girdle muscular dystrophy and provides background on LGMD subtype 21/R9, also described as FKRP-related disease. It is relevant to coders, clinical documentation specialists, and healthcare teams working with neuromuscular, genetic, cardiac, and respiratory manifestations of this disorder. The discussion includes the condition’s general features, symptom pattern, progression, and broad management considerations.

Why This Topic Matters

It helps readers recognize that a new diagnosis-specific ICD-10-CM code has been added for a particular inherited muscular dystrophy subtype and understand the broader clinical context supporting accurate documentation and coding awareness.

What You Will Learn

  • What limb girdle muscular dystrophy subtype 21/R9 is
  • Why the ICD-10-CM limb girdle muscular dystrophy category was expanded
  • How FKRP-related muscle disease can affect multiple body systems
  • What general symptom patterns and management themes are associated with this disorder

Who Should Read This

  • Medical coders
  • Coding auditors
  • Clinical documentation improvement specialists
  • Neurology clinicians
  • Genetics clinicians
  • Cardiology clinicians
  • Respiratory care teams

Codes Discussed

  • ICD-10-CM: G71.03
  • ICD-10-CM: G71.036

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