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

Name of the Condition

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

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) and subsequent encounter (follow-up treatment episode). The code specifies malunion, meaning the fracture has healed in a non-anatomical position, potentially affecting function or alignment.

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. Malunion may occur if the fracture was not properly aligned during initial treatment or if healing was incomplete.

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.

Symptoms

• Persistent pain or discomfort at the fracture site.
• Swelling, bruising, or tenderness around the healed area.
• Limited range of motion or stiffness in the hip or knee.
• Visible deformity or limb length discrepancy if malunion is severe.
• Difficulty bearing weight on the affected leg.

Diagnosis

Physical examination to assess pain, alignment, and function. Imaging tests, such as X-rays or CT scans, are used to confirm malunion and evaluate bone healing. The provider may also assess for functional limitations or associated complications.

Treatment Options

Treatment depends on the severity of malunion and symptoms. Options may include physical therapy to improve mobility, pain management, or surgical intervention (e.g., osteotomy or hardware revision) to realign the bone. Bracing or assistive devices may be recommended to support healing.

Prognosis and Follow-Up

Prognosis varies based on the degree of malunion and patient factors. Most patients recover with appropriate treatment, though some may experience long-term functional limitations. Follow-up care is essential to monitor healing and adjust treatment as needed.

Complications

• Chronic pain or discomfort.
• Reduced mobility or joint stiffness.
• Increased risk of future fractures.
• Nerve or vascular damage (rare).
• Need for additional surgery if malunion worsens.

Lifestyle & Prevention

• Engage in low-impact exercises to maintain bone strength.
• Use protective gear during high-risk activities.
• Ensure adequate calcium and vitamin D intake to support bone health.
• Avoid smoking, which can impair bone healing.
• Follow post-treatment guidelines to promote proper healing.

When to Seek Professional Help

Seek care if you experience worsening pain, new swelling, or difficulty moving the leg. Contact a healthcare provider if you notice signs of infection (e.g., redness, fever) or if symptoms do not improve with treatment.

Tips for Medical Coders

Document the presence of malunion and confirm the fracture is closed. Ensure the encounter is classified as "subsequent" (not initial or acute) and that the fracture type (transverse, nondisplaced) is clearly recorded. Include details on treatment provided and any functional limitations to support coding accuracy.