S52.346A Nondisplaced spiral fracture of shaft of radius, unspecified arm, initial encounter for closed fracture

Name of the Condition

Nondisplaced spiral fracture of shaft of radius, unspecified arm, initial encounter for closed fracture
ICD-10 Code: S52.346A

Summary

A nondisplaced spiral fracture of the shaft of the radius is a break in the long, outer bone of the forearm (radius) between the elbow and wrist, where the fracture line spirals around the bone but the bone fragments remain in their normal alignment. This injury typically results from rotational forces and is classified as closed (no skin penetration) and initial encounter (first treatment). The fracture is stable due to minimal displacement, and treatment focuses on immobilization to allow healing.

Causes

This fracture commonly occurs due to indirect trauma, such as a fall onto an outstretched arm, twisting injuries to the wrist or forearm, or rotational forces during activities like sports or accidents. High-impact events, including motor vehicle collisions or falls from height, may also cause this type of fracture.

Risk Factors

• Participation in activities with a high risk of falls or rotational arm trauma (e.g., contact sports, gymnastics)
• Osteoporosis or weakened bone density
• Advanced age, which increases fracture susceptibility
• Previous forearm or wrist injuries
• Occupations or hobbies involving repetitive stress or heavy lifting

Symptoms

• Sudden, severe pain at the injury site
• Swelling, bruising, or mild deformity of the forearm
• Tenderness to touch
• Difficulty moving the wrist or forearm
• Possible numbness or tingling in the hand or fingers (if nerve involvement)

Diagnosis

Diagnosis is typically made through clinical evaluation and imaging. A physical exam assesses pain, swelling, and range of motion. X-rays confirm the fracture type, location, and displacement. Additional imaging (e.g., CT or MRI) may be used if soft tissue damage or complex injury is suspected. The "closed" classification is confirmed by the absence of skin penetration, and "initial encounter" indicates this is the first treatment episode.

Treatment Options

Treatment focuses on immobilization to promote healing. A cast or splint is applied to the forearm and wrist, often for 6–8 weeks. Pain management may include over-the-counter or prescription medications. Physical therapy is recommended after immobilization to restore strength and mobility. Surgery is rarely needed for nondisplaced fractures unless instability or associated injuries are present.

Prognosis and Follow-Up

Prognosis is generally good with proper immobilization and follow-up. Most fractures heal within 8–12 weeks. Follow-up appointments monitor healing via X-rays and assess for complications. Return to normal activities is gradual, with physical therapy guiding recovery. Long-term outcomes depend on adherence to treatment and rehabilitation.

Complications

• Delayed healing or nonunion (rare)
• Malunion (abnormal healing)
• Nerve or blood vessel damage (e.g., median nerve injury)
• Chronic pain or stiffness
• Post-traumatic arthritis (if joint involvement occurs)

Lifestyle & Prevention

• Use protective gear during high-risk activities (e.g., sports).
• Maintain bone health through calcium and vitamin D intake.
• Avoid falls by removing home hazards (e.g., loose rugs).
• Strengthen forearm muscles through exercise.
• Warm up before physical activity to reduce injury risk.

When to Seek Professional Help

Seek immediate care if:

• Pain is severe or uncontrolled.
• There is visible deformity or bone protrusion.
• Numbness, tingling, or loss of circulation occurs.
• Symptoms worsen after initial treatment.
• Fever or signs of infection develop (e.g., redness, drainage).

Tips for Medical Coders

Code S52.346A is used for a nondisplaced spiral fracture of the radius shaft, unspecified arm, with initial encounter for closed fracture. Document the fracture type (spiral), displacement (nondisplaced), arm (unspecified), encounter type (initial), and fracture status (closed). Ensure clinical notes specify the absence of displacement and skin penetration to support the "closed" classification. Use this code only for the initial treatment phase; subsequent encounters require different codes.