S42.252K Displaced fracture of greater tuberosity of left humerus, subsequent encounter for fracture with nonunion

Name of the Condition

• Displaced fracture of greater tuberosity of left humerus, subsequent encounter for fracture with nonunion (ICD-10 Code: S42.252K)

Summary

This condition involves a displaced fracture of the greater tuberosity, a bony prominence on the upper end of the left humerus (upper arm bone) near the shoulder joint. The fracture has failed to heal properly (nonunion) and this is a subsequent encounter for treatment. The bone fragment remains separated from its normal anatomical position, which may affect shoulder function due to its role as a muscle and ligament attachment site.

Causes

Typically results from direct trauma to the shoulder, such as a fall onto the shoulder, a direct blow, 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 excessive movement before healing.

Risk Factors

• Participation in contact sports or activities with a high risk of shoulder injury.
• Osteoporosis or weakened bone density, which increases susceptibility to fractures and impairs healing.
• Advanced age, which may reduce bone integrity and healing capacity.
• Smoking or poor nutrition, which can delay fracture healing.
• Previous shoulder injuries or surgeries that compromise bone strength or blood supply.

Symptoms

• Persistent pain localized to the shoulder or upper arm, often worsening with movement.
• Swelling, bruising, and tenderness over the fracture site that does not resolve.
• Difficulty moving the shoulder or lifting the arm, with limited range of motion.
• Possible visible deformity or prominence at the shoulder.
• No signs of healing (e.g., callus formation) on imaging after an extended period.

Diagnosis

Physical examination to assess pain, swelling, and range of motion. Imaging tests, such as X-rays or CT scans, to confirm nonunion by showing a persistent gap between bone fragments with no bridging callus. Additional tests may evaluate blood supply or infection if suspected.

Treatment Options

• Immobilization with a sling or brace to stabilize the fracture and promote healing.
• Surgical intervention, such as open reduction and internal fixation (ORIF) or bone grafting, to realign and stabilize the fragments.
• Physical therapy to restore shoulder function and strength after healing.
• Pain management with medications or other modalities.
• Addressing underlying factors (e.g., nutrition, smoking cessation) to optimize healing.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion, patient health, and treatment adherence. Follow-up imaging and clinical assessments are necessary to monitor healing progress. Recovery may take several months, with ongoing therapy to restore function.

Complications

• Chronic pain or shoulder instability.
• Limited range of motion or weakness.
• Infection, particularly if surgery is required.
• Avascular necrosis (loss of blood supply to the bone).
• Need for additional surgeries if initial treatment fails.

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 impair healing.
• Use proper techniques for lifting or sports to reduce injury risk.
• Engage in regular, low-impact exercise to strengthen shoulder muscles once healed.

When to Seek Professional Help

Seek immediate care if experiencing severe pain, swelling, or deformity after an injury. Consult a healthcare provider if pain persists, worsens, or if there are signs of infection (e.g., fever, redness, drainage). Follow up as recommended to monitor healing.

Tips for Medical Coders

Document the subsequent encounter for fracture with nonunion, including clinical notes confirming nonunion (e.g., imaging findings, lack of healing progress). Ensure the left humerus and greater tuberosity are clearly specified. Code S42.252K is used for this condition; verify documentation aligns with the definition of nonunion and subsequent encounter.