S72.22XK Displaced subtrochanteric fracture of left femur, subsequent encounter for closed fracture with nonunion

Name of the Condition

• Displaced subtrochanteric fracture of left femur, subsequent encounter for closed fracture with nonunion

Summary

A displaced subtrochanteric fracture of the left femur is a break in the thigh bone just below the lesser trochanter, where the bone fragments shift out of their normal alignment. In a closed fracture, the skin remains intact. This injury disrupts the structural integrity of the femur and requires prompt medical evaluation to restore function and prevent complications. The "subsequent encounter" indicates this is a follow-up visit for a fracture that has not healed properly (nonunion), meaning the bone fragments have failed to fuse together as expected during the healing process.

Causes

High-impact trauma, such as falls from a height or motor vehicle accidents. Direct force to the hip or thigh region. Underlying bone conditions, including osteoporosis or osteopenia, which reduce bone density and strength. Nonunion may occur due to inadequate immobilization, poor blood supply to the fracture site, infection, or excessive movement during healing.

Risk Factors

• Advanced age, particularly in individuals over 65.
• Chronic conditions affecting bone health, such as osteoporosis or cancer.
• History of prior fractures or bone disorders.
• Participation in high-risk activities or sports with potential for falls or collisions.
• Factors that impair healing, such as smoking, diabetes, or nutritional deficiencies.

Symptoms

• Persistent or worsening pain in the hip, groin, or thigh area.
• Inability to bear weight on the affected leg.
• Swelling, bruising, or visible deformity at the fracture site.
• Shortening or rotation of the injured leg.
• Lack of improvement in symptoms over time, indicating delayed healing.

Diagnosis

Imaging studies, such as X-rays or CT scans, to confirm the fracture location and assess displacement. Physical examination to evaluate pain, swelling, and functional limitations. Additional imaging (e.g., MRI) may be used to assess blood flow and healing potential. Documentation of nonunion requires evidence of failed bone union after an appropriate healing period.

Treatment Options

Surgical intervention, such as internal fixation with plates, screws, or intramedullary nails, to stabilize the fracture and promote healing. Bone grafting may be performed to stimulate bone growth. Non-surgical options, including bracing or casting, may be considered in select cases. Physical therapy to restore mobility and strength once healing progresses.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, overall health, and response to treatment. Nonunion may require extended recovery and additional interventions. Regular follow-up with imaging to monitor healing progress is essential. Long-term management may involve ongoing physical therapy and activity modifications to prevent future fractures.

Complications

Delayed or failed healing (nonunion). Infection, particularly if surgical intervention is required. Nerve or blood vessel damage. Chronic pain or arthritis in the hip joint. Reduced mobility or functional impairment.

Lifestyle & Prevention

Maintain bone health through adequate calcium and vitamin D intake. 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. Manage underlying conditions like osteoporosis with appropriate medical treatment.

When to Seek Professional Help

Severe or worsening pain that is not relieved by rest or medication. Inability to bear weight on the affected leg. Signs of infection, such as fever, redness, or drainage from the fracture site. New or worsening deformity. Lack of improvement in symptoms after initial treatment.

Tips for Medical Coders

Document the encounter as a "subsequent" visit for a closed fracture with nonunion. Include details about the fracture's location (left femur, subtrochanteric), displacement, and the presence of nonunion. Note any surgical interventions or treatments performed. Ensure documentation supports the nonunion diagnosis, as this impacts coding and reimbursement. Verify that the fracture is classified as closed (no skin breach) and that the encounter is for follow-up of a previously treated fracture.