S62.243A Displaced fracture of shaft of first metacarpal bone, unspecified hand, initial encounter for closed fracture

Name of the Condition

• Displaced fracture of shaft of first metacarpal bone, unspecified hand, initial encounter for closed fracture

Summary

This condition involves a break in the shaft (midportion) of the first metacarpal bone, which connects the thumb to the wrist, with displacement of the bone fragments. Displacement means the broken pieces are no longer aligned properly. The fracture is closed (skin intact) and is the initial encounter for this injury. The severity and treatment depend on the extent of displacement and associated injuries.

Causes

Typically caused by direct trauma, such as a fall onto an outstretched hand, a blow to the thumb or hand, or a crushing injury. High-impact activities or accidents may also lead to fractures in this area.

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.

Symptoms

• Pain, swelling, and tenderness in the thumb or base of the hand.
• Bruising or discoloration around the injury site.
• Limited range of motion or difficulty moving the thumb.
• Visible deformity in severe cases.

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 its extent, including displacement and alignment of bone fragments.

Treatment Options

• Immobilization: Using a cast, splint, or brace to stabilize the area and allow healing.
• Closed reduction: Manual realignment of displaced bone fragments without surgery.
• Surgical intervention: If fragments are severely displaced or unstable, surgery may be required to realign and fix the bone with pins, screws, or plates.
• Pain management: Medications to reduce discomfort during recovery.
• Rehabilitation: Physical therapy to restore strength and range of motion once healing progresses.

Prognosis and Follow-Up

Most fractures heal within 6–8 weeks with proper immobilization and care. Follow-up appointments monitor healing progress, and rehabilitation may be needed to regain full function. Long-term outcomes depend on the severity of displacement and adherence to treatment plans.

Complications

• Malunion or nonunion of the fracture.
• Chronic pain or stiffness in the thumb or hand.
• Nerve or tendon damage near the fracture site.
• Reduced grip strength or range of motion.

Lifestyle & Prevention

• Use protective gear during high-risk activities (e.g., sports).
• Maintain bone health through adequate calcium and vitamin D intake.
• Avoid falls by using assistive devices if balance is impaired.
• Practice proper hand positioning during activities to reduce injury risk.

When to Seek Professional Help

Seek immediate medical attention if there is severe pain, visible deformity, inability to move the thumb, or signs of infection (e.g., redness, warmth, fever) after an injury.

Tips for Medical Coders

Document the fracture as displaced, specify the hand as "unspecified," and confirm the encounter is initial for a closed fracture. Ensure clinical notes support the displacement and closed nature of the injury to justify the code.