M66.311 Spontaneous rupture of flexor tendons, right shoulder

Name of the Condition

• Spontaneous Rupture of Flexor Tendons, Right Shoulder (ICD-10 Code: M66.311)

Summary

Spontaneous rupture of flexor tendons in the right shoulder is a condition where the tendons responsible for shoulder flexion (bending the arm forward) tear unexpectedly without a clear traumatic event. These tendons connect muscles to bones and enable movement. The rupture occurs spontaneously, meaning it is not directly caused by an acute injury.

Causes

Degenerative changes in the tendon tissue over time. Underlying inflammatory conditions affecting tendon health. Idiopathic factors (no identifiable cause). Rarely, associated with connective tissue disorders or metabolic conditions.

Risk Factors

• Age-related tendon weakening.
• Pre-existing tendon disorders or chronic inflammation.
• History of repetitive strain or overuse.
• Systemic conditions affecting connective tissue.
• Use of certain medications, including corticosteroids or fluoroquinolone antibiotics.

Symptoms

• Sudden pain at the site of the tendon.
• Inability to flex the affected shoulder.
• Audible popping or snapping sensation at rupture.
• Swelling, bruising, or visible deformity.

Diagnosis

Physical examination to assess tendon function and range of motion. Imaging studies, such as ultrasound or MRI, to confirm the tear and assess severity. Patient history to identify potential risk factors or underlying conditions.

Treatment Options

• Immobilization (e.g., sling or brace) to allow healing.
• Physical therapy to restore strength and mobility.
• Surgical repair for severe or complete ruptures.
• Pain management with medications or other modalities.

Prognosis and Follow-Up

Recovery depends on the severity of the rupture and treatment. Early intervention improves outcomes. Follow-up care may include regular monitoring of healing and functional recovery. Physical therapy is often necessary to regain full range of motion.

Complications

• Persistent pain or stiffness.
• Reduced shoulder function or mobility.
• Re-rupture of the tendon.
• Infection (if surgical intervention is required).

Lifestyle & Prevention

• Avoid repetitive overhead movements or heavy lifting.
• Maintain shoulder strength and flexibility through exercise.
• Manage underlying conditions (e.g., arthritis) that may affect tendon health.
• Use proper form during physical activities to reduce strain.

When to Seek Professional Help

Seek immediate medical attention if you experience sudden shoulder pain, loss of movement, or a popping sensation. Prompt evaluation is important to prevent further damage and optimize recovery.

Tips for Medical Coders

Document the specific site (right shoulder) and confirm the absence of trauma to support the "spontaneous" nature of the rupture. Include details about imaging or physical exam findings that confirm the diagnosis. Ensure the code aligns with clinical documentation to reflect the condition accurately.