G71.220
X-linked myotubular myopathy
Clinical Classification Guidelines
Inclusion Terms
- Myotubular (centronuclear) myopathy
Medical Intelligence & Overview
X-linked myotubular myopathy is a rare genetic disorder that affects muscle strength and development. It is a form of centronuclear myopathy characterized by abnormal muscle cell structure. Usually presenting in male infants, this condition can lead to significant muscle weakness and, in severe cases, respiratory difficulties. Awareness and understanding of this condition are crucial for early diagnosis and care planning.
Causes & Symptoms
Clinical Causes: Genetic mutation on the X chromosome affecting the MTM1 gene Inheritance pattern primarily X-linked recessive, meaning males are more commonly affected In some cases, new mutations can occur without a family history Potential involvement of other genetic or environmental factors, though not clearly established
Key Symptoms: Significant muscle weakness evident from birth or early infancy Hypotonia, or decreased muscle tone, leading to floppy baby appearance Limited motor skills such as delayed sitting, standing, or walking Difficulty with swallowing or feeding, which may require nutritional support Respiratory difficulties due to weakened respiratory muscles Possible facial muscle weakness affecting expression and feeding
Diagnostic & Treatment
Diagnosis Path: Diagnosis involves a combination of clinical assessment and diagnostic testing, including:
Treatment Protocols: While there is no cure for X-linked myotubular myopathy, management focuses on alleviating symptoms and supporting development:
Clinical Advice & FAQs
Billing Guidance
Is G71.220 a billable ICD-10 code?
Yes, G71.220 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report G71.220?
Clinical documentation must specify the nature of X-linked myotubular myopathy and any associated comorbidities for accurate reporting.
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