S99.131G Salter-Harris Type III physeal fracture of right metatarsal, subsequent encounter for fracture with delayed healing

Name of the Condition

• Salter-Harris Type III physeal fracture of right metatarsal, subsequent encounter for fracture with delayed healing

Summary

This condition involves a Salter-Harris Type III fracture affecting the growth plate (physis) of the right metatarsal bone, with delayed healing during a subsequent encounter. Type III fractures extend from the joint surface through the epiphysis and into the growth plate, potentially disrupting both bone growth and joint integrity. These injuries typically occur in children or adolescents with active growth plates and require careful evaluation to guide treatment and prevent long-term complications. Delayed healing indicates the fracture has not progressed as expected, necessitating ongoing monitoring and intervention.

Causes

Direct trauma or injury to the foot, such as falls, sports-related impacts, or accidents, can disrupt the growth plate. Sudden force applied to the metatarsals, including twisting or direct blows, may lead to this type of fracture. The injury often results from high-energy events that stress the developing bone structure. Factors contributing to delayed healing may include inadequate immobilization, poor blood supply, or underlying health conditions affecting bone repair.

Risk Factors

• Age: Children and adolescents, as their growth plates are still developing and more susceptible to injury.
• High-impact activities: Participation in sports like running, jumping, or contact sports.
• Previous injuries: Prior damage to the metatarsals or surrounding structures may increase vulnerability.
• Delayed healing: Inadequate initial treatment, poor nutrition, or systemic conditions (e.g., diabetes) can impede recovery.

Symptoms

• Persistent pain and swelling localized to the metatarsal area beyond the typical healing timeline.
• Difficulty bearing weight or walking on the affected foot, with no improvement over time.
• Limited range of motion in the toes or midfoot, indicating ongoing joint or bone involvement.
• Possible visible deformity or instability at the fracture site.

Diagnosis

Diagnosis involves a thorough clinical evaluation, including a detailed history of the injury and healing progress. Imaging studies, such as X-rays or MRI, are used to assess fracture alignment, growth plate integrity, and signs of delayed union. Comparison with prior imaging may help determine the extent of healing. Physical examination focuses on pain, swelling, and functional limitations to guide further management.

Treatment Options

Treatment aims to promote healing and restore function. This may include extended immobilization with casting or bracing, activity modification, and pain management. Surgical intervention, such as internal fixation, may be considered if the fracture is unstable or fails to heal with conservative measures. Physical therapy is often recommended to improve strength and mobility once healing progresses.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, adherence to treatment, and any underlying factors affecting healing. Regular follow-up appointments are essential to monitor progress through imaging and clinical assessments. Most fractures with delayed healing can still achieve full recovery with appropriate care, though some may experience long-term joint or growth complications.

Complications

• Chronic pain or instability in the affected foot.
• Premature closure of the growth plate, potentially leading to limb length discrepancy or deformity.
• Post-traumatic arthritis due to joint surface disruption.
• Nonunion or malunion of the fracture, requiring additional intervention.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use proper footwear and protective gear during sports to reduce injury risk.
• Maintain a balanced diet rich in calcium and vitamin D to support bone health.
• Follow rehabilitation guidelines to ensure gradual return to normal activity.

When to Seek Professional Help

Seek immediate medical attention if pain worsens, swelling increases, or new deformity develops. Contact a healthcare provider if weight-bearing becomes impossible or if symptoms persist beyond the expected healing period. Early intervention is critical to address delayed healing and prevent complications.

Tips for Medical Coders

Document the fracture type (Salter-Harris III), laterality (right metatarsal), and encounter type (subsequent) clearly. Include details on delayed healing, such as imaging findings or clinical notes, to support the code. Ensure the record specifies the fracture’s impact on growth plate and joint integrity, as these are key for accurate coding.