S72.336K Nondisplaced oblique fracture of shaft of unspecified femur, subsequent encounter for closed fracture with nonunion

Name of the Condition

• Nondisplaced Oblique Fracture of Shaft of Unspecified Femur, Subsequent Encounter for Closed Fracture with Nonunion

Summary

A nondisplaced oblique fracture of the shaft of the unspecified femur is a break in the long, central portion of the thigh bone where the fracture line runs at an angle, and the bone fragments remain aligned. This type of fracture involves the diaphysis (main structural part) of the femur and is classified as closed, meaning the overlying skin is intact. The term "subsequent encounter" indicates this is a follow-up visit for the fracture, and "nonunion" refers to the failure of the bone to heal properly after an expected period.

Causes

Such fractures often 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 to the fracture site, infection, or other factors that impede 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 affect bone healing.
• Certain medical conditions, such as diabetes or vascular disease.

Symptoms

• Persistent or recurrent pain at the fracture site.
• Swelling, bruising, or tenderness around the fracture site.
• Inability to bear weight on the affected leg.
• Possible deformity or shortening of the leg (if displacement occurs).
• Limited range of motion in the hip or knee.
• Possible numbness or tingling if nerve involvement occurs.

Diagnosis

Physical examination to assess pain, alignment, and function. Imaging studies, such as X-rays, CT scans, or MRI, are typically used to evaluate the fracture site and confirm nonunion. Additional tests, like bone scans or blood work, may be performed to assess healing and rule out infection.

Treatment Options

Treatment depends on the severity of the nonunion and may include surgical intervention, such as bone grafting, internal fixation with plates or screws, or external fixation. Non-surgical options, like bracing or electrical stimulation, may be considered for select cases. Physical therapy is often recommended to restore strength and mobility.

Prognosis and Follow-Up

Prognosis varies based on the individual's overall health, the extent of the nonunion, and the success of treatment. Regular follow-up visits are necessary to monitor healing and adjust treatment as needed. Full recovery may take several months, and some patients may experience long-term limitations in mobility or function.

Complications

• Chronic pain or discomfort.
• Persistent nonunion or delayed healing.
• Infection at the fracture site.
• Nerve or vascular damage.
• Arthritis or joint stiffness.
• Reduced quality of life due to mobility limitations.

Lifestyle & Prevention

• Avoid high-impact activities that increase fracture risk.
• Maintain a healthy diet rich in calcium and vitamin D to support bone health.
• Engage in weight-bearing exercises to strengthen bones.
• Use protective gear during sports or activities with fall risks.
• Quit smoking, as it impairs bone healing.
• Follow post-fracture care instructions to promote proper healing.

When to Seek Professional Help

Seek medical attention if you experience worsening pain, swelling, or deformity at the fracture site. Contact a healthcare provider if you notice signs of infection, such as fever, redness, or drainage. Prompt evaluation is important if you cannot bear weight on the affected leg or if symptoms persist despite treatment.

Tips for Medical Coders

When coding for S72.336K, ensure documentation supports the diagnosis of a nondisplaced oblique fracture of the femur shaft, a subsequent encounter for a closed fracture, and evidence of nonunion. Verify that the encounter is not the initial treatment phase and that the fracture is classified as closed (skin intact). Document any contributing factors to nonunion, such as poor healing or prior interventions, to support accurate coding.