S99.132D Salter-Harris Type III physeal fracture of left metatarsal, subsequent encounter for fracture with routine healing

Name of the Condition

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

Summary

This condition represents a Salter-Harris Type III fracture of the left metatarsal's growth plate (physis), documented during a subsequent encounter for fracture care with evidence of routine healing. Type III fractures involve a fracture line extending through the physis and into the epiphysis, potentially affecting joint surfaces. These injuries typically occur in children or adolescents with active growth plates and require ongoing monitoring to ensure proper healing and prevent complications.

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.

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.

Symptoms

• Pain and swelling localized to the metatarsal area.
• Difficulty bearing weight or walking on the affected foot.
• Limited range of motion in the toes or midfoot.
• Possible visible deformity or bruising.

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and range of motion. Imaging studies, typically X-rays, are used to confirm the fracture type and assess healing progress. The "subsequent encounter" designation indicates ongoing care after the initial injury, with documentation of routine healing.

Treatment Options

Treatment focuses on immobilization with casting or splinting to support healing. Weight-bearing restrictions may be recommended initially, followed by gradual rehabilitation. Pain management and monitoring for complications are standard. Surgical intervention is rare but may be considered for displaced fractures.

Prognosis and Follow-Up

With proper care, most Salter-Harris Type III fractures heal without long-term issues. Routine follow-up ensures healing progresses as expected. The "subsequent encounter" phase confirms ongoing monitoring during the recovery period, with return to normal activities typically occurring within weeks to months, depending on severity.

Complications

Potential complications include growth plate disruption affecting bone development, joint stiffness, or malunion. In rare cases, arthritis may develop if the joint surface is damaged. Early intervention reduces these risks.

Lifestyle & Prevention

Preventive measures include proper footwear, avoiding high-risk activities without protection, and strengthening foot muscles. Children participating in sports should use appropriate safety gear. Prompt treatment of minor injuries can prevent progression to more severe fractures.

When to Seek Professional Help

Seek care if pain worsens, swelling increases, or mobility declines during recovery. Signs of infection (redness, fever) or new deformity require immediate evaluation. Persistent pain after the expected healing period also warrants medical attention.

Tips for Medical Coders

Document the fracture type, laterality (left metatarsal), and encounter type (subsequent) clearly. Include evidence of routine healing, such as imaging reports or clinical notes, to support the code. Ensure the fracture is classified as Salter-Harris Type III and specify the metatarsal involved.