S99.029K Salter-Harris Type II physeal fracture of unspecified calcaneus, subsequent encounter for fracture with nonunion

Name of the Condition

• Salter-Harris Type II physeal fracture of unspecified calcaneus, subsequent encounter for fracture with nonunion
• Growth plate fracture of the heel bone (Type II, unspecified side), subsequent encounter for nonunion

Summary

This condition involves a Salter-Harris Type II fracture of the calcaneus (heel bone) growth plate, with nonunion during a subsequent encounter. It occurs in developing bone, typically in children or adolescents, and requires management to address failed healing. Type II fractures involve separation of the growth plate with a metaphyseal fragment. The "subsequent encounter" indicates follow-up care, while "nonunion" signifies incomplete bone healing.

Causes

Direct trauma or injury to the heel, such as falls, sports impacts, or accidents. Sudden force applied to the foot disrupts the growth plate and pulls a metaphyseal fragment. Nonunion may result from inadequate initial treatment, poor blood supply, or excessive movement at the fracture site.

Risk Factors

• Age: Children and adolescents, as growth plates are still developing and more prone to injury.
• High-impact activities: Participation in sports like running, jumping, or contact sports.
• Previous injuries: Prior damage to the heel or surrounding structures may increase vulnerability.
• Inadequate initial treatment: Improper immobilization or delayed care can contribute to nonunion.

Symptoms

• Persistent pain and swelling in the heel area.
• Difficulty bearing weight or walking on the affected foot.
• Limited range of motion in the ankle or foot.
• Visible deformity or instability in severe cases.
• Possible clicking or grinding sensations with movement.

Diagnosis

Physical examination to assess tenderness, swelling, and range of motion. Imaging studies, such as X-rays or CT scans, to evaluate fracture alignment and healing status. Assessment of nonunion signs, including persistent fracture lines or lack of callus formation. Review of prior treatment and imaging to confirm the fracture type and encounter timing.

Treatment Options

• Immobilization: Casts or braces to stabilize the fracture and promote healing.
• Surgical intervention: Internal fixation (e.g., screws, pins) to realign and stabilize the bone.
• Bone grafting: May be used to stimulate healing in cases of nonunion.
• Physical therapy: To restore strength and mobility after healing.
• Pain management: Medications or other therapies to alleviate discomfort.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and response to treatment. With proper management, many patients achieve functional recovery, though some may experience long-term stiffness or deformity. Regular follow-up imaging and clinical assessments are necessary to monitor healing progress. Return to activity is gradual, guided by pain and stability.

Complications

• Chronic pain or instability in the heel.
• Growth disturbances or limb length discrepancies.
• Arthritis or joint degeneration over time.
• Infection (if surgical intervention is required).
• Persistent nonunion requiring additional treatment.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use proper footwear and protective gear during sports.
• Maintain a healthy diet rich in calcium and vitamin D to support bone health.
• Follow rehabilitation guidelines to optimize healing and prevent re-injury.

When to Seek Professional Help

Seek care if pain worsens, swelling increases, or mobility declines. Prompt evaluation is needed for new deformity, signs of infection (e.g., fever, redness), or inability to bear weight. Follow-up is critical if healing does not progress as expected.

Tips for Medical Coders

This code represents a subsequent encounter for a Salter-Harris Type II physeal fracture of the calcaneus with nonunion. Document the encounter type (subsequent) and confirm nonunion status. Ensure alignment with clinical notes and imaging findings. Code specificity requires distinguishing between initial, subsequent, and sequela encounters, with nonunion indicating failed healing.