M62.519 Muscle wasting and atrophy, not elsewhere classified, unspecified shoulder

Name of the Condition

• Muscle wasting and atrophy, not elsewhere classified, unspecified shoulder (ICD-10-CM: M62.519)

Summary

Muscle wasting and atrophy, not elsewhere classified, unspecified shoulder describes the loss of muscle mass and strength in the shoulder region without a more specific underlying cause. This condition may result from disuse, systemic factors, or other non-specific contributors, potentially leading to reduced shoulder function and functional impairment.

Causes

Causes may include prolonged immobility of the shoulder, malnutrition, chronic illness, or metabolic disturbances. In some cases, the underlying cause remains unidentified, and the condition may arise without a clear precipitating factor.

Risk Factors

• Prolonged inactivity or immobilization of the shoulder (e.g., due to injury or surgery)
• Advanced age
• Chronic diseases (e.g., cancer, kidney disease)
• Malnutrition or poor dietary intake
• Certain medications (e.g., corticosteroids)
• Neurological conditions affecting muscle control

Symptoms

• Gradual loss of muscle mass or visible shrinking of shoulder muscles
• Reduced strength or difficulty performing shoulder-related tasks (e.g., lifting, reaching)
• Fatigue or weakness during shoulder movement
• Changes in muscle tone or appearance of the shoulder

Diagnosis

Diagnosis typically involves a physical examination to assess muscle size and strength, along with patient history to identify potential contributing factors. Additional tests, such as blood work or imaging, may be used to rule out underlying conditions.

Treatment Options

Treatment focuses on addressing underlying causes, if identified, and may include physical therapy to improve strength and mobility, nutritional support, or management of chronic conditions. In some cases, addressing disuse through activity or rehabilitation is key.

Prognosis and Follow-Up

Prognosis depends on the underlying cause and response to treatment. Regular follow-up may be necessary to monitor muscle function and adjust interventions as needed.

Complications

Potential complications include persistent weakness, reduced range of motion, and functional limitations affecting daily activities.

Lifestyle & Prevention

• Maintain regular physical activity to support muscle health
• Ensure adequate nutrition, including protein intake
• Address and manage chronic conditions that may contribute to muscle loss
• Avoid prolonged immobility when possible

When to Seek Professional Help

Seek medical attention if you notice unexplained muscle loss, weakness, or difficulty with shoulder movement, as these may indicate an underlying issue requiring evaluation.

Tips for Medical Coders

Document the shoulder involvement as unspecified when the side is not clearly documented. Ensure clinical correlation to support the diagnosis and avoid using this code if a more specific cause or laterality is identified.