S62.235K Other nondisplaced fracture of base of first metacarpal bone, left hand, subsequent encounter for fracture with nonunion

Name of the Condition

• Other nondisplaced fracture of base of first metacarpal bone, left hand, subsequent encounter for fracture with nonunion

Summary

This condition involves a nondisplaced fracture at the base of the first metacarpal bone in the left hand, where the bone fragments remain in their normal anatomical position. It is classified as a subsequent encounter, indicating follow-up care for a fracture that has failed to heal (nonunion). The fracture site shows no displacement, but the lack of union requires ongoing management to promote healing or address complications.

Causes

Typically caused by direct trauma, such as a fall onto an outstretched hand, a blow to the thumb, or a crushing injury. High-impact activities or accidents may also lead to fractures in this area. Nonunion may result from inadequate initial treatment, poor blood supply to the bone, or excessive movement at the fracture site during healing.

Risk Factors

• Participation in contact sports or activities with a high risk of falls.
• Osteoporosis or weakened bone structure, especially in older adults.
• Previous hand or thumb injuries that may have compromised bone integrity.
• Smoking or other factors that impair bone healing.

Symptoms

• Persistent pain, swelling, and tenderness at the base of the thumb or left hand.
• Bruising or discoloration around the injury site.
• Limited range of motion or difficulty moving the thumb.
• Visible deformity in severe cases.
• Lack of improvement in symptoms over time, indicating nonunion.

Diagnosis

Physical examination to assess pain, swelling, and mobility. Imaging tests, such as X-rays, CT scans, or MRIs, to confirm the fracture and evaluate for nonunion. Additional tests may be used to assess bone healing and rule out other complications.

Treatment Options

Treatment depends on the severity of nonunion and may include immobilization with a cast or splint, physical therapy to restore function, or surgical intervention to stabilize the fracture and promote healing. Bone grafting or other procedures may be necessary in some cases.

Prognosis and Follow-Up

Prognosis varies based on the extent of nonunion and response to treatment. Regular follow-up appointments are essential to monitor healing and adjust treatment as needed. Full recovery may take several months, and some patients may experience long-term limitations in hand function.

Complications

• Chronic pain or discomfort.
• Persistent limited range of motion.
• Increased risk of future fractures.
• Infection (if surgical intervention is required).

Lifestyle & Prevention

• Avoid high-impact activities that risk further injury.
• Use protective gear during sports or manual labor.
• Maintain bone health through proper nutrition and exercise.
• Follow post-treatment instructions to support healing.

When to Seek Professional Help

Seek medical attention if symptoms worsen, new pain or swelling develops, or there is no improvement in symptoms after initial treatment. Immediate care is needed for signs of infection, such as fever, redness, or drainage from the injury site.

Tips for Medical Coders

Document the subsequent encounter for fracture with nonunion, including details of the fracture's location, nondisplaced status, and lack of healing. Ensure clinical notes support the nonunion diagnosis and subsequent encounter timing. Code S62.235K is specific to the left hand and requires clear documentation of the fracture's progression and treatment history.