Codes / ICD10CM / S66.191

S66.191 Other injury of flexor muscle, fascia and tendon of left index finger at wrist and hand level

ICD10CM code

ICD10CM

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Name of the Condition

  • Other injury of flexor muscle, fascia and tendon of left index finger at wrist and hand level
  • ICD-10 Code: S66.191

Summary

This condition involves an injury to the flexor muscle, fascia, or tendon of the left index finger at the wrist and hand level. The injury is classified as "other" to denote a specific type not covered by more detailed codes (e.g., strain, laceration, or rupture). These structures are critical for finger flexion and hand function, and the injury may result from trauma or overuse.

Causes

Common causes include acute trauma (e.g., falls, direct blows, or penetrating wounds) and repetitive strain from activities requiring finger movement. Sudden forceful movements or overuse may also disrupt these tissues, though the exact mechanism is not specified in the code.

Risk Factors

  • Participation in sports or occupations involving repetitive finger use.
  • Lack of protective gear during high-risk activities.
  • Previous injuries to the fingers, wrist, or hand.

Symptoms

  • Pain, swelling, or tenderness in the affected finger or wrist.
  • Reduced range of motion or weakness in the finger.
  • Visible signs of injury, such as cuts, bruises, or deformity.
  • Difficulty performing tasks requiring grip or dexterity.

Diagnosis

Physical examination to assess injury extent and function. Imaging tests (e.g., X-rays, MRI) to evaluate soft tissue damage and rule out fractures.

Treatment Options

  • Rest and Immobilization: Splints or casts to stabilize the area and promote healing.
  • Physical Therapy: Exercises to restore range of motion and strength.
  • Medications: Pain relievers or anti-inflammatory drugs to manage symptoms.
  • Surgical Intervention: May be required for severe injuries or if conservative measures fail.

Prognosis and Follow-Up

Recovery depends on the injury severity and treatment adherence. Most cases improve with appropriate care, but full function may take weeks to months. Follow-up appointments monitor healing and adjust treatment as needed.

Complications

  • Chronic pain or stiffness.
  • Reduced finger mobility or strength.
  • Nerve or vascular damage (rare).
  • Infection (if the injury is open).

Lifestyle & Prevention

  • Use protective gear during high-risk activities.
  • Take breaks during repetitive tasks to avoid overuse.
  • Perform stretching or strengthening exercises to maintain finger health.

When to Seek Professional Help

Seek care if symptoms worsen, do not improve with rest, or if there is severe pain, swelling, or deformity. Immediate attention is needed for open wounds or signs of infection.

Tips for Medical Coders

Document the specific location (left index finger) and level (wrist and hand) clearly. Ensure the injury is classified as "other" when not fitting more detailed codes (e.g., strain, laceration). Include details on encounter type (e.g., initial, subsequent) if applicable for accurate coding.

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