Codes / ICD10CM / S56.121A

S56.121A Laceration of flexor muscle, fascia and tendon of right index finger at forearm level, initial encounter

ICD10CM code

ICD10CM

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Name of the Condition

  • Laceration of flexor muscle, fascia and tendon of right index finger at forearm level, initial encounter (ICD-10 Code: S56.121A)

Summary

This condition describes a cut or tear affecting the flexor muscle, fascia, and tendon of the right index finger at the forearm level, occurring during the initial encounter for treatment. It involves damage to the soft tissues responsible for finger flexion, typically resulting from trauma.

Causes

Direct trauma, such as a sharp object or penetrating injury, that lacerates the flexor structures of the right index finger at the forearm. This may include cuts from tools, glass, or other sharp implements.

Risk Factors

  • Handling sharp objects or tools without proper protection.
  • Occupations or activities involving manual labor or repetitive hand use (e.g., construction, cooking, sports).
  • Lack of safety measures during tasks with potential for forearm or finger injury.

Symptoms

  • Pain or tenderness at the forearm near the right index finger.
  • Difficulty bending (flexing) the right index finger.
  • Visible wound or laceration at the injury site.
  • Swelling or bruising in the forearm region.

Diagnosis

Physical examination to assess finger mobility, tendon function, and wound characteristics. Imaging, such as ultrasound or MRI, may be used to evaluate the extent of tendon or muscle damage if needed.

Treatment Options

  • Wound cleaning and closure (e.g., sutures) for the laceration.
  • Immobilization (e.g., splint) to protect the injured structures.
  • Pain management with medications as recommended.
  • Referral to a specialist (e.g., hand surgeon) for tendon repair if indicated.

Prognosis and Follow-Up

Recovery depends on the severity of the laceration and timely treatment. Most cases heal with proper care, but follow-up may be needed to monitor healing and restore function. Physical therapy might be recommended to improve mobility.

Complications

  • Infection at the wound site.
  • Tendon re-rupture or incomplete healing.
  • Persistent pain or stiffness in the finger.
  • Nerve damage affecting sensation or movement.

Lifestyle & Prevention

  • Use protective gear (e.g., gloves) when handling sharp objects.
  • Practice proper safety techniques during manual tasks.
  • Avoid repetitive or forceful finger movements until fully healed.

When to Seek Professional Help

Seek immediate medical attention for deep lacerations, inability to move the finger, or signs of infection (e.g., redness, pus, fever).

Tips for Medical Coders

Document the specific finger (right index), location (forearm level), and encounter type (initial) to accurately assign S56.121A. Ensure clinical notes specify the structures involved (flexor muscle, fascia, tendon) and the nature of the injury (laceration) for coding clarity.

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