Codes / ICD10CM / S42.125A

S42.125A Nondisplaced fracture of acromial process, left shoulder, initial encounter for closed fracture

ICD10CM code

ICD10CM

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Name of the Condition

  • Nondisplaced fracture of acromial process, left shoulder, initial encounter for closed fracture

Summary

A nondisplaced fracture of the acromial process of the left shoulder is a break in the bony projection (acromion) of the scapula where the bone fragments remain aligned. The acromial process forms part of the shoulder's roof and connects to the clavicle, contributing to joint stability. This injury typically results from trauma and is classified as closed (no skin break) and initial (first encounter for treatment).

Causes

Traumatic injury is the primary cause, often from a direct blow to the shoulder, a fall onto the shoulder, or a forceful impact during activities like sports or accidents. High-energy events, such as motor vehicle collisions, can also lead to this type of fracture.

Risk Factors

  • Participation in contact sports or activities with a risk of shoulder impact.
  • Osteoporosis or conditions that weaken bone density.
  • Advanced age, which may increase susceptibility to fractures from minor trauma.
  • Previous shoulder injuries that compromise bone integrity.

Symptoms

  • Pain localized to the top of the shoulder, especially with movement.
  • Swelling, bruising, or tenderness over the acromial area.
  • Limited range of motion in the shoulder joint.
  • Difficulty lifting or rotating the arm.
  • In severe cases, a visible deformity or instability may be present.

Diagnosis

Diagnosis begins with a physical examination to assess pain, swelling, and range of motion. Imaging studies, such as X-rays, are typically used to confirm the fracture and verify that the bone fragments are aligned (nondisplaced). Additional imaging may be ordered if soft tissue damage is suspected.

Treatment Options

Treatment often includes immobilization with a sling to support the shoulder and allow healing. Pain management with medications may be recommended. Physical therapy is usually prescribed after initial healing to restore strength and mobility. Surgical intervention is rarely needed for nondisplaced fractures unless complications arise.

Prognosis and Follow-Up

Most nondisplaced fractures heal well with conservative treatment. Full recovery typically occurs within 6–8 weeks, though this may vary based on individual factors. Follow-up appointments monitor healing progress and guide rehabilitation. Return to normal activities is gradual, with physical therapy helping to restore function.

Complications

Complications are uncommon but may include delayed healing, persistent pain, or reduced shoulder mobility. In rare cases, arthritis or nerve injury may develop. Early treatment and adherence to rehabilitation reduce these risks.

Lifestyle & Prevention

  • Use protective gear during contact sports or high-risk activities.
  • Maintain bone health through adequate calcium and vitamin D intake.
  • Practice fall prevention strategies, especially for older adults.
  • Avoid repetitive overhead motions that strain the shoulder.

When to Seek Professional Help

Seek immediate care if you experience severe shoulder pain, inability to move the arm, visible deformity, or signs of infection (e.g., fever, redness). Persistent pain or limited mobility after initial treatment also warrants medical evaluation.

Tips for Medical Coders

Document the side (left shoulder), fracture status (nondisplaced), and encounter type (initial for closed fracture) to ensure accurate coding. Include details on imaging results, treatment provided, and any follow-up care to support code specificity.

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