Limb girdle musc dyst due to alpha sarcoglycan dysfunction

This code identifies a specific type of limb-girdle muscular dystrophy (LGMD) caused by a genetic defect in the alpha-sarcoglycan protein. This condition primarily affects the muscles of the shoulders, upper arms, hips, and thighs, leading to progressive weakness and wasting in these areas. It is an inherited disorder characterized by a distinct molecular pathology.

Use this code when documentation clearly specifies a diagnosis of limb-girdle muscular dystrophy type 2D (LGMD2D) or LGMD due to alpha-sarcoglycan deficiency. This diagnosis is typically confirmed through genetic testing identifying mutations in the SGCA gene. Clinical presentation of progressive proximal muscle weakness, often with elevated creatine kinase levels, supports this diagnosis.

• Ensure genetic testing results or a definitive clinical diagnosis from a neurologist explicitly state "alpha sarcoglycan dysfunction" or "LGMD2D."
• Do not use this code for other types of limb-girdle muscular dystrophy without specific documentation of alpha-sarcoglycan involvement.
• Consider sequencing this code with codes for associated symptoms or complications, such as muscle weakness (R27.8) or gait abnormalities (R26.89), if separately documented and treated.