S42.256K Nondisplaced fracture of greater tuberosity of unspecified humerus, subsequent encounter for fracture with nonunion

Name of the Condition

• Nondisplaced fracture of greater tuberosity of unspecified humerus, subsequent encounter for fracture with nonunion (ICD-10 Code: S42.256K)

Summary

This condition involves a nondisplaced fracture of the greater tuberosity, a bony prominence on the upper end of the humerus (upper arm bone) near the shoulder joint, where the fracture has failed to heal (nonunion) during a subsequent encounter. The fracture fragments remain in their normal anatomical position without displacement, but the lack of healing indicates a delayed or incomplete recovery process. The greater tuberosity serves as an attachment point for shoulder muscles and ligaments, and its fracture may affect shoulder function.

Causes

Fractures of the greater tuberosity typically result from direct trauma, such as a fall onto the shoulder, a direct blow to the area, or forceful muscle contraction (e.g., during sports or lifting). Nonunion may occur due to inadequate immobilization, poor blood supply to the fracture site, infection, or underlying conditions that impair bone healing (e.g., diabetes, smoking, or nutritional deficiencies).

Risk Factors

• Participation in contact sports or activities with a high risk of falls.
• Osteoporosis or other conditions that weaken bone density.
• Advanced age, which increases susceptibility to fractures and healing delays.
• Previous shoulder injuries or surgeries.
• Factors that impair bone healing (e.g., smoking, diabetes, or malnutrition).

Symptoms

• Persistent or recurrent pain in the shoulder or upper arm.
• Swelling, bruising, and tenderness around the shoulder.
• Difficulty moving the arm, especially with overhead motions.
• Possible deformity or visible lump at the fracture site.
• Lack of improvement in symptoms over time, despite prior treatment.

Diagnosis

Physical examination to assess pain, swelling, and range of motion. Imaging tests, such as X-rays or CT scans, to evaluate the fracture site and confirm nonunion (e.g., visible gap between bone fragments or absence of healing signs). Additional tests (e.g., blood work) may be ordered to identify underlying conditions affecting bone healing.

Treatment Options

Treatment focuses on promoting fracture healing and restoring shoulder function. Options may include immobilization with a sling or brace, physical therapy to improve range of motion and strength, and surgical intervention (e.g., bone grafting or fixation) if nonunion persists. Pain management and addressing underlying risk factors (e.g., optimizing nutrition or managing diabetes) are also important.

Prognosis and Follow-Up

Prognosis depends on the severity of nonunion and response to treatment. With appropriate intervention, many patients achieve healing and improved function, but recovery may be prolonged. Regular follow-up appointments and imaging are typically required to monitor progress and adjust treatment as needed.

Complications

• Persistent pain or limited shoulder mobility.
• Chronic nonunion, requiring additional treatment.
• Increased risk of future fractures due to weakened bone.
• Potential for shoulder instability or arthritis over time.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Maintain a balanced diet rich in calcium and vitamin D to support bone health.
• Quit smoking and limit alcohol, as these can impair healing.
• Use protective gear during sports or activities with fall risks.
• Follow post-treatment guidelines for immobilization and physical therapy.

When to Seek Professional Help

Seek medical attention if you experience worsening pain, new swelling, or difficulty moving the arm, as these may indicate complications. Prompt evaluation is also recommended if symptoms do not improve with initial treatment or if you have underlying conditions that affect bone healing.

Tips for Medical Coders

This code (S42.256K) is used for a nondisplaced fracture of the greater tuberosity of the humerus with nonunion during a subsequent encounter. Documentation should specify the fracture type (nondisplaced), the presence of nonunion, and the encounter type (subsequent). Ensure the record includes details about the fracture’s healing status and any contributing factors (e.g., delayed healing, prior treatments) to support accurate coding.