S72.355K Nondisplaced comminuted fracture of shaft of left femur, subsequent encounter for closed fracture with nonunion

Name of the Condition

• Nondisplaced comminuted fracture of shaft of left femur, subsequent encounter for closed fracture with nonunion (ICD-10 Code: S72.355K)

Summary

This condition involves a fracture of the left femur (thighbone) where the bone is broken into multiple pieces, but the fragments remain in their normal anatomical position (nondisplaced). The fracture is localized to the shaft (central portion) of the left femur. This is a subsequent encounter for a closed fracture (no break in the skin) that has failed to heal properly, resulting in nonunion.

Causes

Such fractures typically result from high-impact trauma, such as motor vehicle accidents, falls from significant heights, or direct force to the thigh. Rotational or axial loading injuries can also cause this type of break. Nonunion may occur due to inadequate immobilization, poor blood supply to the bone, infection, or excessive movement at the fracture site during healing.

Risk Factors

• Osteoporosis or other bone-weakening conditions.
• Advanced age, due to decreased bone density.
• Participation in high-impact sports or activities.
• Prior history of fractures or bone abnormalities.
• Trauma involving significant force.
• Smoking or poor nutrition, which can impair healing.
• Certain medical conditions (e.g., diabetes, vascular disease) that affect bone repair.

Symptoms

• Persistent pain at the fracture site, often worsening with activity.
• Swelling, bruising, or tenderness that does not resolve over time.
• Inability to bear weight on the affected leg.
• Possible visible deformity or shortening of the leg (in displaced fractures).
• Numbness or tingling if nerve involvement occurs.
• Lack of progress in healing as observed during follow-up visits.

Diagnosis

Physical examination to assess pain, alignment, and function. Imaging tests such as X-rays, CT scans, or MRI may be used to evaluate the fracture site and confirm nonunion. Bone scans or ultrasound may also help assess blood flow and healing potential. Clinical history, including prior treatment and time since injury, is critical for diagnosis.

Treatment Options

Treatment depends on the severity of nonunion and patient factors. Options may include surgical intervention (e.g., internal fixation with plates or screws, bone grafting) to stabilize the fracture and promote healing. Non-surgical approaches, such as prolonged immobilization or electrical stimulation, may be considered in select cases. Physical therapy is often recommended to restore function and strength.

Prognosis and Follow-Up

Prognosis varies based on the cause of nonunion and treatment response. With appropriate intervention, many fractures can heal, but recovery may be prolonged. Regular follow-up with imaging and clinical assessments is necessary to monitor progress. Long-term outcomes depend on adherence to treatment plans and addressing underlying risk factors.

Complications

• Chronic pain or disability.
• Infection, particularly if surgery is required.
• Nerve or vascular damage.
• Malunion (healing in an abnormal position).
• Reduced mobility or function.
• Need for additional surgeries.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Follow a balanced diet rich in calcium and vitamin D to support bone health.
• Quit smoking, as it impairs healing.
• Use protective equipment during sports or high-risk activities.
• Maintain a healthy weight to reduce stress on bones.
• Attend all follow-up appointments to monitor healing.

When to Seek Professional Help

Seek immediate medical attention if you experience:

• Sudden, severe pain at the fracture site.
• Increased swelling, redness, or drainage.
• Numbness, tingling, or weakness in the leg.
• Inability to move the leg or bear weight.
• Signs of infection (e.g., fever, chills).

Tips for Medical Coders

Document the encounter as a subsequent visit for a closed fracture with nonunion. Ensure clinical notes specify the fracture type (nondisplaced, comminuted), location (shaft of left femur), and the presence of nonunion. Include details on treatment provided and any imaging results confirming nonunion. Code S72.355K is appropriate when the fracture is closed, nondisplaced, comminuted, and located in the shaft of the left femur, with nonunion documented during a subsequent encounter.