S62.358P Nondisplaced fracture of shaft of other metacarpal bone, subsequent encounter for fracture with malunion

Name of the Condition

• Nondisplaced fracture of shaft of other metacarpal bone, subsequent encounter for fracture with malunion

Summary

A nondisplaced fracture of the shaft of another metacarpal bone, subsequent encounter for fracture with malunion, refers to a break in the middle portion of one of the hand bones (excluding the thumb) where the bone fragments remain aligned but have healed in a non-anatomical position. This code is used during follow-up visits after the initial fracture, indicating malunion (improper healing) without displacement. The injury typically results from trauma or impact to the hand, with the fracture maintaining its normal alignment but healing abnormally.

Causes

Direct trauma, such as a fall or blow to the hand. Sports-related injuries or accidents. Inadequate immobilization or premature weight-bearing during initial healing.

Risk Factors

• Participation in contact sports or high-impact activities.
• Reduced bone density or osteoporosis.
• Occupational hazards involving manual labor.
• Delayed or incomplete initial treatment.

Symptoms

• Persistent pain or discomfort in the hand.
• Swelling or tenderness around the affected area.
• Limited range of motion or stiffness in the fingers.
• Visible or palpable deformity due to malunion.
• Possible functional impairment, such as difficulty gripping objects.

Diagnosis

Physical examination by a healthcare provider to assess tenderness, swelling, or deformity, including evaluation of healing alignment. Imaging tests, such as X-rays, to confirm malunion and evaluate the fracture site. Comparison with prior imaging to assess healing progress.

Treatment Options

• Orthopedic referral for evaluation of malunion severity.
• Pain management using over-the-counter or prescription medications.
• Physical therapy to improve mobility and strength.
• Possible surgical intervention (e.g., osteotomy) to correct malunion if functional impairment is significant.
• Immobilization or bracing to support healing if re-injury occurs.

Prognosis and Follow-Up

Prognosis depends on the extent of malunion and functional impact. Most patients experience improved symptoms with conservative management, but severe malunion may require surgery. Follow-up visits monitor healing, pain, and functional recovery. Long-term outcomes often include residual stiffness or mild deformity, but most patients regain adequate hand function.

Complications

• Chronic pain or discomfort.
• Reduced grip strength or dexterity.
• Arthritis or joint degeneration due to malunion.
• Increased risk of re-fracture.
• Nerve or tendon irritation from abnormal bone alignment.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use protective gear (e.g., gloves) during sports or manual labor.
• Follow prescribed rehabilitation protocols to optimize healing.
• Maintain bone health through adequate nutrition (e.g., calcium, vitamin D) and exercise.

When to Seek Professional Help

Seek care if pain worsens, swelling increases, or new deformity develops. Consult a provider if hand function declines or if there are signs of infection (e.g., redness, fever). Urgent evaluation is needed for sudden loss of sensation or circulation in the affected hand.

Tips for Medical Coders

Document the presence of malunion and the subsequent encounter status clearly in the medical record. Ensure the fracture is confirmed as nondisplaced and that the metacarpal bone (excluding the thumb) is specified. Include details on healing progress and any functional limitations to support code assignment. Verify that the encounter is subsequent (not initial) and that malunion is explicitly documented.