M67.461 Ganglion, right knee

Name of the Condition

• Common Name: Ganglion Cyst
• Technical Term: Ganglion, right knee (ICD-10 Code: M67.461)

Summary

A ganglion is a non-cancerous, fluid-filled lump that typically develops near tendons or joints, in this case, the right knee. It is filled with a jelly-like fluid and may vary in size. Ganglions are generally benign but can cause discomfort or interfere with knee movement.

Causes

The exact cause of ganglions is unknown. They may arise from joint or tendon irritation, trauma, or repetitive stress, which can lead to the formation of a cystic structure.

Risk Factors

• Age: Most common in adults aged 20-40.
• Gender: Women are more likely to develop ganglions.
• Repetitive motion: Activities involving frequent knee use (e.g., sports, kneeling) may increase risk.
• Previous injury: A history of knee joint or tendon injury can contribute to development.

Symptoms

• Visible lump or swelling near the right knee joint
• Pain or discomfort, especially with knee movement
• Tingling, numbness, or weakness if the ganglion presses on a nerve

Diagnosis

Diagnosis involves a physical examination to assess the lump's size, location, and texture. Imaging tests like ultrasound or MRI may be used to confirm the diagnosis and rule out other conditions. Aspiration of the fluid may be performed for analysis.

Treatment Options

• Observation: Many ganglions resolve on their own without treatment.
• Immobilization: Resting the knee or using a brace may reduce discomfort.
• Aspiration: Fluid may be drained to relieve pressure, though recurrence is possible.
• Surgery: Removal may be considered for persistent or painful ganglions.

Prognosis and Follow-Up

Most ganglions are benign and do not cause long-term issues. Recurrence is possible after treatment. Follow-up may involve monitoring for changes in size or symptoms.

Complications

• Recurrence after treatment
• Nerve compression leading to numbness or weakness
• Pain or limited mobility if the ganglion interferes with joint function

Lifestyle & Prevention

• Avoid repetitive knee stress or trauma.
• Use proper form during physical activities.
• Maintain joint health through regular exercise and stretching.

When to Seek Professional Help

Seek care if the lump is painful, growing, or affecting knee movement. Consult a healthcare provider if numbness, tingling, or weakness occurs.

Tips for Medical Coders

Document the specific location (right knee) and confirm the diagnosis. Ensure clinical notes support the ganglion's presence and any associated symptoms or treatment.