S72.326K Nondisplaced transverse fracture of shaft of unspecified femur, subsequent encounter for closed fracture with nonunion

Name of the Condition

• Nondisplaced Transverse Fracture of Shaft of Unspecified Femur, Subsequent Encounter for Closed Fracture with Nonunion (ICD-10 Code: S72.326K)

Summary

A nondisplaced transverse fracture of the femur shaft is a break in the long, central portion of the thigh bone where the fracture line runs horizontally across the bone, and the bone fragments remain aligned without separation. This type of fracture involves the diaphysis (main structural part) of the femur and is classified as closed (no open wound). The code S72.326K specifies a subsequent encounter for a fracture that has failed to heal (nonunion) after an initial treatment period.

Causes

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

Risk Factors

• Participation in high-impact sports or activities.
• Osteoporosis or other bone-weakening conditions.
• Advanced age, due to decreased bone density.
• Prior history of fractures or bone abnormalities.
• Trauma or accidents involving significant force.
• Smoking or poor nutrition, which can impair bone healing.

Symptoms

• Persistent or worsening pain at the fracture site.
• Swelling, bruising, or tenderness around the fracture area.
• Inability to bear weight on the affected leg.
• Possible deformity or instability if nonunion progresses.
• Limited range of motion in the hip or knee.

Diagnosis

Physical examination to assess pain, alignment, and function. Imaging tests, such as X-rays or CT scans, are used to confirm the fracture and evaluate for nonunion (e.g., visible gap between bone fragments or lack of callus formation). Additional tests, like bone scans or MRI, may be ordered to assess blood flow or soft tissue involvement.

Treatment Options

Treatment focuses on promoting bone healing and may include surgical intervention (e.g., bone grafting, internal fixation) or non-surgical methods (e.g., prolonged immobilization, electrical stimulation). Pain management and physical therapy are often part of the rehabilitation process to restore function.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and the effectiveness of treatment. Follow-up imaging is typically required to monitor healing progress. Long-term outcomes may include residual pain, limited mobility, or the need for additional interventions if nonunion persists.

Complications

• Chronic pain or discomfort.
• Delayed or failed healing (persistent nonunion).
• Infection, especially if surgical intervention is performed.
• Nerve or vascular damage in severe cases.
• Reduced mobility or functional impairment.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Maintain a balanced diet rich in calcium and vitamin D to support bone health.
• Quit smoking, as it impairs bone healing.
• Use protective gear during sports or high-risk activities.
• Follow post-treatment guidelines to minimize movement at the fracture site.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or deformity after a fall or injury. Contact your healthcare provider if pain worsens, or if you notice signs of infection (e.g., redness, fever) or delayed healing.

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 transverse), location (shaft of unspecified femur), and the presence of nonunion. Code S72.326K is appropriate when the fracture has not healed after an initial treatment period and requires ongoing management.