S72.042N Displaced fracture of base of neck of left femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Name of the Condition

• Displaced fracture of base of neck of left femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion (S72.042N)

Summary

This condition involves a break in the upper portion of the left femur (thigh bone) at the base of the femoral neck, near the hip joint, with the bone fragments shifted out of their normal anatomical position. The fracture is classified as open (type IIIA, IIIB, or IIIC), indicating a wound or break in the skin at the fracture site, and is associated with nonunion, meaning the bone has failed to heal properly after an initial injury. This type of injury typically requires ongoing medical evaluation to assess the extent of damage and guide treatment, as open fractures carry a risk of infection and further complications.

Causes

High-impact trauma, such as falls or motor vehicle accidents, is a common cause. In older adults with weakened bone density (e.g., osteoporosis), fractures may occur from minor trauma or low-impact events. Direct force to the hip or thigh region can also result in this injury. Open fractures may occur when the trauma causes the bone to pierce the skin or when an external object penetrates the skin and fractures the bone. Nonunion can develop due to inadequate initial treatment, poor blood supply to the bone, infection, or excessive movement at the fracture site.

Risk Factors

• Advanced age, especially in individuals over 65
• Osteoporosis or other bone-weakening conditions
• Female gender, due to higher osteoporosis prevalence
• History of prior fractures or bone diseases
• Participation in high-risk activities (e.g., contact sports)
• Trauma involving significant force or open wounds
• Poor blood supply to the fracture site
• Infection at the fracture site

Symptoms

• Persistent or worsening hip or groin pain
• Swelling, bruising, or tenderness around the hip
• Inability to bear weight on the affected leg
• Visible deformity or shortening of the leg
• Limited range of motion in the hip joint
• Open wound or exposed bone at the fracture site
• Signs of infection, such as redness, warmth, or drainage

Diagnosis

Physical examination to assess pain, swelling, and deformity. Imaging studies, including X-rays, CT scans, or MRI, to evaluate the fracture pattern, bone alignment, and presence of nonunion. Assessment of the open wound to determine fracture type (IIIA, IIIB, or IIIC) and check for infection. Blood tests to detect signs of infection or inflammation. Review of prior treatment and healing progress to confirm nonunion.

Treatment Options

Surgical intervention is often required to realign the bone fragments and promote healing, such as internal fixation with plates, screws, or rods. Bone grafting may be necessary to stimulate bone growth and address nonunion. Antibiotics or other treatments to manage infection if present. Wound care for open fractures to prevent further complications. Physical therapy to restore mobility and strength after healing.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, presence of infection, and response to treatment. Nonunion may require additional interventions, such as revision surgery or bone stimulation techniques. Regular follow-up with imaging to monitor healing progress. Long-term rehabilitation to regain function and prevent future fractures. Complications like arthritis or chronic pain may occur, requiring ongoing management.

Complications

• Infection at the fracture site
• Delayed or failed healing (nonunion)
• Arthritis or joint damage
• Chronic pain or stiffness
• Nerve or blood vessel injury
• Malunion (improper healing)
• Need for additional surgeries

Lifestyle & Prevention

• Maintain bone health through a diet rich in calcium and vitamin D.
• Engage in weight-bearing exercises to strengthen bones.
• Use protective gear during high-risk activities.
• Address fall risks, especially in older adults (e.g., home modifications).
• Avoid smoking and limit alcohol, as they can weaken bones.
• Follow post-treatment guidelines to support healing.

When to Seek Professional Help

Seek immediate medical attention for severe hip pain, inability to bear weight, visible deformity, or open wounds. Contact a healthcare provider if pain worsens, swelling increases, or signs of infection (e.g., fever, redness, drainage) develop. Follow up with a specialist if healing does not progress as expected.

Tips for Medical Coders

Document the fracture type (IIIA, IIIB, or IIIC) and confirmation of nonunion to support the code. Include details of prior treatment and healing status. Note the presence of open wounds or infection, as these impact coding. Ensure the encounter is classified as "subsequent" to reflect ongoing care for a nonunion. Verify that the left femur and base of the neck are clearly documented.