S72.464D Nondisplaced supracondylar fracture with intracondylar extension of lower end of right femur, subsequent encounter for closed fracture with routine healing

Name of the Condition

• Nondisplaced supracondylar fracture with intracondylar extension of lower end of right femur, subsequent encounter for closed fracture with routine healing

Summary

This condition involves a fracture at the distal (lower) end of the right femur, specifically extending from the supracondylar region (above the condyles) into the intracondylar area (within the condyles). The fracture disrupts the structural integrity of the knee joint, potentially affecting stability and function. The pattern involves both the metaphyseal region above the condyles and the articular surface of the condyles themselves, with the bone fragments remaining aligned. The term "subsequent encounter" indicates this is a follow-up visit for a previously diagnosed closed fracture, and "routine healing" confirms the fracture is progressing as expected without complications.

Causes

High-impact trauma, such as falls, motor vehicle accidents, or direct force to the knee. Sports injuries involving sudden twisting or axial loading. Low-energy trauma in individuals with weakened bone density may also result in this fracture pattern.

Risk Factors

• Advanced age and associated bone density loss.
• Osteoporosis or other metabolic bone disorders.
• Participation in high-risk activities or contact sports.
• Prior history of knee or femur injuries.
• Conditions affecting bone strength, such as chronic steroid use.

Symptoms

• Mild to moderate knee pain and swelling (diminishing over time).
• Bruising or discoloration around the knee.
• Gradual improvement in weight-bearing ability.
• Reduced knee stiffness as healing progresses.
• Possible residual instability if healing is incomplete.

Diagnosis

Physical examination to assess knee stability, range of motion, and tenderness. Imaging studies, such as X-rays or CT scans, to confirm fracture alignment and healing status. Review of prior imaging and clinical notes to verify the fracture type and healing trajectory.

Treatment Options

• Immobilization with a brace or cast to support the knee during healing.
• Pain management with analgesics or anti-inflammatory medications.
• Physical therapy to restore strength, flexibility, and function.
• Monitoring of healing progress through periodic imaging.
• Surgical intervention (rarely needed for nondisplaced fractures) if alignment shifts or complications arise.

Prognosis and Follow-Up

Most nondisplaced fractures with routine healing have a favorable prognosis, with full recovery expected over several months. Follow-up visits are scheduled to assess healing, adjust treatment, and guide rehabilitation. Long-term outcomes depend on adherence to therapy and absence of complications.

Complications

• Delayed union or nonunion of the fracture.
• Post-traumatic arthritis due to joint surface involvement.
• Residual knee stiffness or weakness.
• Nerve or vascular injury (rare in healed fractures).
• Infection (unlikely in closed fractures with routine healing).

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Engage in low-impact exercises (e.g., swimming, cycling) to maintain fitness.
• Use protective gear during sports or high-risk activities.
• Maintain bone health through adequate calcium, vitamin D, and weight-bearing exercise.
• Fall prevention strategies for older adults (e.g., home modifications, balance training).

When to Seek Professional Help

• Increasing pain, swelling, or bruising.
• New deformity or instability in the knee.
• Difficulty bearing weight or moving the knee.
• Signs of infection (e.g., fever, redness, drainage).
• Numbness, tingling, or weakness in the leg or foot.

Tips for Medical Coders

This code (S72.464D) is used for a subsequent encounter of a closed, nondisplaced supracondylar fracture with intracondylar extension of the right femur, with routine healing. Documentation should confirm the fracture type, laterality (right femur), encounter type (subsequent), and healing status (routine). Ensure the record specifies "closed fracture" and "routine healing" to support the code. Avoid using this code for initial encounters, open fractures, or fractures with delayed/nonunion.