S64.490 Injury of digital nerve of right index finger

Name of the Condition

• Injury of digital nerve of right index finger

Summary

An injury of the digital nerve of the right index finger involves damage to the peripheral nerve supplying the index finger, which can result from trauma, compression, or other pathological processes. This condition may affect sensory or motor functions in the affected finger, depending on the extent of nerve involvement. Prompt evaluation is important to determine the nature and severity of the injury and guide appropriate management.

Causes

Direct trauma to the finger, such as cuts, crush injuries, or fractures. Prolonged compression of the nerve, for example, from tight jewelry, repetitive motions, or ill-fitting splints. Penetrating injuries, including lacerations or puncture wounds. Iatrogenic injury during surgical procedures involving the finger.

Risk Factors

• Participation in activities with a high risk of finger trauma (e.g., contact sports, manual labor).
• Pre-existing conditions that affect nerve health, such as diabetes or peripheral neuropathy.
• Use of tools or equipment that may cause repetitive stress or compression.
• History of prior injuries or surgeries in the finger region.

Symptoms

• Numbness, tingling, or burning sensations in the affected finger.
• Weakness or loss of function in the finger muscles.
• Pain or discomfort along the nerve pathway.
• Altered sensation or loss of feeling in the finger.

Diagnosis

Diagnosis typically involves a physical examination to assess sensory and motor function in the finger. The provider may evaluate for tenderness, swelling, or visible signs of injury. Nerve conduction studies or electromyography may be used to assess nerve function and identify the extent of damage. Imaging, such as X-rays or MRI, may be performed to rule out associated fractures or soft tissue injuries.

Treatment Options

Treatment depends on the severity of the injury. Mild cases may be managed with rest, immobilization, and pain relief. Severe injuries may require surgical repair of the nerve. Physical therapy may be recommended to restore function and strength. Medications, such as anti-inflammatories or nerve pain relievers, may be prescribed to manage symptoms.

Prognosis and Follow-Up

Prognosis varies based on the extent of nerve damage and the timeliness of treatment. Early intervention often leads to better recovery of sensory and motor function. Follow-up care may include regular monitoring of nerve function and rehabilitation to optimize outcomes. Long-term recovery may take several months, and some residual symptoms may persist.

Complications

Potential complications include chronic pain, persistent numbness or weakness, and reduced finger function. Incomplete nerve healing may result in permanent sensory or motor deficits. Infection or delayed healing may occur if the injury is associated with an open wound.

Lifestyle & Prevention

Avoid activities that increase the risk of finger trauma. Use protective gear during high-risk activities. Maintain good hand hygiene and avoid repetitive motions that may compress nerves. If engaging in manual labor, use ergonomic tools and take regular breaks to reduce strain.

When to Seek Professional Help

Seek medical attention if you experience sudden or severe finger pain, numbness, or loss of function. Prompt evaluation is important if the injury is associated with an open wound, bleeding, or visible deformity. Consult a healthcare provider if symptoms worsen or do not improve with initial care.

Tips for Medical Coders

This code (S64.490) is specific to the right index finger. Ensure documentation clearly identifies the finger and side (right) to support accurate coding. Note the absence of an encounter level or laterality modifier in this code; if applicable, use the appropriate 7th character for encounter type (e.g., initial, subsequent) when required. Verify that the injury is isolated to the digital nerve and not associated with other structures unless separately documented.