S92.325P Nondisplaced fracture of second metatarsal bone, left foot, subsequent encounter for fracture with malunion

Name of the Condition

• Technical Term: Nondisplaced fracture of second metatarsal bone, left foot, subsequent encounter for fracture with malunion
• ICD-10 Code: S92.325P
• Common Name: Broken second metatarsal (left foot, malunion)

Summary

A nondisplaced fracture of the second metatarsal bone in the left foot is a break in the long bone of the midfoot where the bone fragments remain aligned. This code applies to a subsequent encounter for a fracture that has healed with malunion, meaning the bone has healed in a non-anatomical position. The second metatarsal is a weight-bearing bone, and malunion may affect gait, mobility, or pain levels. Treatment focuses on managing symptoms and addressing functional limitations, with outcomes dependent on the degree of malalignment and patient-specific factors.

Causes

Direct trauma to the left foot, such as a fall, sports injury, or crush injury, is the most common cause of the initial fracture. Malunion occurs when the bone heals in an abnormal position, often due to inadequate immobilization, poor blood supply, or excessive movement during the healing process. High-impact forces or delayed treatment of the initial injury may increase the risk of malunion.

Risk Factors

• Participation in high-impact sports or activities with a risk of foot trauma
• Wearing improper or non-supportive footwear
• Conditions that weaken bones, such as osteoporosis or diabetes
• Advanced age, which may reduce bone density and healing capacity
• Previous foot injuries or fractures that affect bone alignment

Symptoms

• Persistent pain or discomfort in the midfoot area of the left foot
• Swelling or tenderness around the affected bone
• Difficulty bearing weight or walking on the injured foot
• Visible or palpable deformity in the foot structure
• Altered gait or balance issues due to malalignment

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and deformity. Imaging studies, such as X-rays or CT scans, are used to confirm the presence of a malunion and evaluate the degree of bone misalignment. The healthcare provider will review the patient’s medical history, including the initial fracture and treatment, to determine the cause of malunion and plan appropriate management.

Treatment Options

Treatment depends on the severity of malunion and functional impact. Conservative options include pain management, physical therapy to improve mobility, and orthotic devices to support the foot. Surgical intervention may be considered for significant malalignment affecting gait or causing chronic pain, such as osteotomy to realign the bone. Rehabilitation focuses on restoring strength and function.

Prognosis and Follow-Up

Prognosis varies based on the degree of malunion and patient factors. Many patients experience improved symptoms with conservative treatment, though some may have persistent limitations. Regular follow-up appointments are necessary to monitor healing, assess function, and adjust treatment plans. Long-term outcomes depend on adherence to rehabilitation and management of underlying risk factors.

Complications

• Chronic pain or discomfort in the affected foot
• Altered gait or balance issues
• Increased risk of future fractures due to weakened bone structure
• Development of arthritis in the surrounding joints
• Reduced mobility or activity limitations

Lifestyle & Prevention

• Wear supportive, properly fitting footwear to reduce foot stress.
• Avoid high-impact activities that increase fracture risk.
• Maintain bone health through a balanced diet and regular exercise.
• Use protective gear during sports or activities with foot trauma risk.
• Follow post-fracture care instructions to minimize malunion risk.

When to Seek Professional Help

Seek medical attention if you experience worsening pain, swelling, or deformity in the left foot. Consult a healthcare provider if you have difficulty walking, persistent numbness, or signs of infection (e.g., redness, warmth, or drainage). Early evaluation is important for managing malunion and preventing further complications.

Tips for Medical Coders

This code is used for a subsequent encounter for a nondisplaced fracture of the second metatarsal bone in the left foot with malunion. Document the presence of malunion, the affected foot (left), and the subsequent encounter status. Ensure clinical documentation supports the malunion diagnosis and aligns with the code’s specificity to avoid miscoding.