S72.335N Nondisplaced oblique fracture of shaft of left femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Name of the Condition

• Nondisplaced Oblique Fracture of Shaft of Left Femur, Subsequent Encounter for Open Fracture Type IIIA, IIIB, or IIIC with Nonunion

Summary

A nondisplaced oblique fracture of the shaft of the left 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. The subsequent encounter indicates ongoing care for a previously treated injury, and the open fracture type IIIA, IIIB, or IIIC classification denotes significant soft tissue damage, contamination, or vascular injury. The presence of nonunion indicates the fracture has failed to heal properly after an extended 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. The open nature of the fracture suggests the bone has pierced the skin, typically due to the force of the injury. Nonunion may occur due to inadequate immobilization, poor blood supply, 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.
• Poor nutrition or smoking, which can impair bone healing.
• Inadequate initial treatment or follow-up care.

Symptoms

• Persistent pain at the fracture site, often worsening with activity.
• Swelling, bruising, or tenderness around the affected area.
• Inability to bear weight on the left leg.
• Possible numbness or tingling if nerve involvement occurs.
• Visible signs of the original open fracture, such as scarring or tissue damage.
• Limited range of motion in the hip or knee.

Diagnosis

Physical examination to assess pain, alignment, and function. Imaging tests such as X-rays to visualize the fracture and assess nonunion. CT scans or MRIs may be used to evaluate soft tissue damage or vascular involvement. Laboratory tests to check for infection or assess healing status. Review of prior treatment and imaging to confirm the fracture type and nonunion.

Treatment Options

• Surgical intervention, such as internal fixation with plates or nails, to stabilize the fracture.
• Bone grafting to promote healing in cases of nonunion.
• Antibiotics or wound care for open fracture complications.
• Physical therapy to restore strength and mobility.
• Pain management with medications or other modalities.
• Close monitoring to ensure proper healing and address complications.

Prognosis and Follow-Up

Prognosis depends on the severity of the original injury, the success of treatment, and the patient’s overall health. Nonunion may require additional interventions, and open fractures carry a risk of infection or long-term disability. Regular follow-up with imaging and clinical assessments is essential to monitor healing and adjust treatment as needed. Recovery may take several months, with ongoing rehabilitation to restore function.

Complications

• Infection at the fracture site or from the original open wound.
• Delayed or failed healing (nonunion or malunion).
• Nerve or vascular damage leading to numbness, weakness, or circulation issues.
• Chronic pain or reduced mobility.
• Post-traumatic arthritis in the hip or knee.
• Need for additional surgeries or prolonged treatment.

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 bone healing.
• Use protective gear during sports or high-risk activities.
• Maintain a healthy weight to reduce stress on bones.
• Attend all follow-up appointments and adhere to treatment plans.

When to Seek Professional Help

• Increasing pain, swelling, or redness at the fracture site.
• Signs of infection, such as fever, pus, or foul odor.
• Numbness, tingling, or weakness in the leg or foot.
• Difficulty bearing weight or moving the leg.
• Any new or worsening symptoms after treatment.

Tips for Medical Coders

Document the fracture type (oblique, nondisplaced), location (shaft of left femur), and encounter type (subsequent) clearly. Specify the open fracture classification (IIIA, IIIB, or IIIC) and confirm the presence of nonunion. Include details on prior treatments, imaging results, and clinical findings to support the code. Ensure documentation aligns with the ICD-10-CM guidelines for subsequent encounters and open fracture coding.