S72.045Q Nondisplaced fracture of base of neck of left femur, subsequent encounter for open fracture type I or II with malunion

Name of the Condition

• Nondisplaced fracture of base of neck of left femur, subsequent encounter for open fracture type I or II with malunion (S72.045Q)

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. The term "nondisplaced" indicates that the bone fragments remain in their normal anatomical position. The "open fracture type I or II" designation refers to a fracture where the skin is breached, with minimal or moderate soft tissue damage. "Malunion" indicates the fracture has healed in a non-anatomic position, and "subsequent encounter" denotes follow-up care after the initial treatment phase. This type of injury requires evaluation to determine the extent of the fracture and guide appropriate management.

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. Malunion may develop if the fracture was not properly aligned during initial treatment or if healing occurred without intervention.

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)
• Inadequate initial fracture management or non-compliance with treatment

Symptoms

• Persistent hip or groin pain, possibly worsening with activity
• Swelling, bruising, or tenderness around the hip
• Inability to bear weight on the affected leg
• Visible or palpable deformity at the fracture site
• Limited range of motion in the hip joint
• Possible leg length discrepancy due to malunion

Diagnosis

Physical examination to assess pain, mobility, and limb alignment. Imaging studies, including X-rays or CT scans, to visualize the fracture and assess healing position. Evaluation of soft tissue damage from the open fracture. Assessment of malunion through comparison with prior imaging or anatomical measurements.

Treatment Options

Management focuses on addressing malunion and any residual functional impairment. Options may include physical therapy to improve mobility and strength, pain management, and possible surgical intervention (e.g., osteotomy) to realign the bone. Open fracture care may involve wound monitoring and infection prevention. Treatment plans are individualized based on the severity of malunion and patient symptoms.

Prognosis and Follow-Up

Prognosis depends on the degree of malunion and patient factors. Some patients may experience long-term functional limitations, while others recover with minimal impact. Regular follow-up appointments monitor healing, assess mobility, and adjust treatment as needed. Imaging may be repeated to evaluate bone alignment and healing progress.

Complications

• Chronic pain or discomfort
• Reduced mobility or gait abnormalities
• Increased risk of future fractures
• Potential for arthritis in the hip joint
• Nerve or vascular damage from the initial injury
• Infection risk from the open fracture (if not fully resolved)

Lifestyle & Prevention

• Engage in weight-bearing exercises to maintain bone density (as advised by a healthcare provider)
• Use assistive devices (e.g., cane, walker) to reduce strain on the affected hip
• Avoid high-impact activities that may worsen the condition
• Follow a balanced diet rich in calcium and vitamin D to support bone health
• Attend all scheduled follow-up appointments to monitor healing

When to Seek Professional Help

Seek immediate medical attention if you experience:

• Sudden, severe hip pain
• Inability to move the leg or bear weight
• Signs of infection (e.g., fever, increased redness, pus)
• Worsening swelling or deformity
• New or worsening neurological symptoms (e.g., numbness, weakness)

Tips for Medical Coders

Document the laterality (left femur), fracture type (open I or II), and malunion status clearly. Specify the encounter type as "subsequent" and include details on the healing phase (e.g., active treatment, healing without active treatment) to support code assignment. Ensure documentation aligns with the clinical findings and treatment provided.