S72.043M Displaced fracture of base of neck of unspecified femur, subsequent encounter for open fracture type I or II with nonunion

Name of the Condition

• Displaced fracture of base of neck of unspecified femur, subsequent encounter for open fracture type I or II with nonunion (S72.043M)

Summary

This condition involves a break in the upper portion of the femur (thigh bone) at the base of the femoral neck, near the hip joint. The term "displaced" indicates that the bone fragments have shifted out of their normal anatomical position. The fracture is classified as open (type I or II), meaning there is a break in the skin with minimal or moderate soft tissue damage. The "subsequent encounter" specifies that this is a follow-up visit for an established fracture, and "nonunion" indicates the fracture has not healed properly. This type of injury typically requires ongoing medical evaluation to assess bone healing and guide further treatment.

Causes

High-impact trauma, such as falls or motor vehicle accidents, is a common cause. In older adults, particularly those 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. Nonunion may develop due to inadequate immobilization, poor blood supply to the bone, infection, or other factors that impede healing.

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)
• Smoking or poor nutrition, which can impair bone healing

Symptoms

• Persistent severe pain in the hip or groin area
• 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
• Possible signs of infection (e.g., redness, warmth, or drainage) if the fracture is open

Diagnosis

Physical examination to assess pain, swelling, and range of motion. Imaging studies, such as X-rays, CT scans, or MRI, to evaluate the fracture site, assess for nonunion, and check for signs of infection. Blood tests may be ordered to detect infection or assess bone healing markers. Documentation of the fracture type (open I or II) and nonunion status is critical for accurate coding.

Treatment Options

Treatment focuses on promoting bone healing and addressing nonunion. Options may include surgical intervention (e.g., internal fixation, bone grafting) to stabilize the fracture and encourage union. Antibiotics may be prescribed if infection is present. Physical therapy is often recommended to restore mobility and strength. Follow-up imaging is used to monitor healing progress.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, patient health, and treatment adherence. Nonunion may require additional interventions, and recovery can be prolonged. Regular follow-up appointments are necessary to assess healing, adjust treatment, and address complications. Long-term monitoring for hip function and potential arthritis is important.

Complications

• Nonunion or delayed healing
• Infection (especially with open fractures)
• Avascular necrosis (loss of blood supply to the femoral head)
• Post-traumatic arthritis
• Chronic pain or disability
• 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 assistive devices (e.g., canes, walkers) to prevent falls, especially in older adults.
• Avoid high-risk activities that increase fracture risk.
• Quit smoking and limit alcohol, as both impair bone healing.

When to Seek Professional Help

Seek immediate medical attention if you experience severe hip pain, inability to bear weight, visible deformity, or signs of infection (e.g., fever, drainage). Follow up with your healthcare provider if pain persists, swelling worsens, or you notice reduced mobility after treatment.

Tips for Medical Coders

Document the fracture type (open I or II), nonunion status, and subsequent encounter details clearly. Ensure the open fracture classification and nonunion are explicitly stated in the medical record to support accurate coding. Verify that the encounter is subsequent (not initial) and that all relevant details align with the code description.