S52.355E Nondisplaced comminuted fracture of shaft of radius, left arm, subsequent encounter for open fracture type I or II with routine healing

Name of the Condition

Nondisplaced comminuted fracture of shaft of radius, left arm, subsequent encounter for open fracture type I or II with routine healing
ICD-10 Code: S52.355E

Summary

A nondisplaced comminuted fracture of the shaft of the radius involves a break in the long, outer bone of the forearm (radius) between the elbow and wrist, where the bone is shattered into multiple pieces but the fragments remain in their original alignment. This injury is classified as an open fracture type I or II, meaning the skin was breached (type I) or there was a small wound with minimal soft tissue damage (type II). The "subsequent encounter" indicates this is a follow-up visit for a fracture that is healing as expected, with no signs of delayed union or complications. Management focuses on monitoring healing progress and ensuring the fracture site remains stable.

Causes

This fracture typically results from high-impact trauma, such as falls onto an outstretched arm, direct blows to the forearm, or accidents involving significant force (e.g., motor vehicle collisions, sports injuries). The open nature of the fracture arises from the force piercing the skin or causing a small laceration, while the comminuted pattern occurs when the bone breaks into multiple fragments. The "subsequent encounter" phase follows initial treatment, where the fracture is now in a routine healing phase.

Risk Factors

• Participation in contact sports or activities with a high risk of falls
• 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

• Mild to moderate pain at the injury site, decreasing over time
• Swelling or bruising that is resolving
• Possible residual tenderness with movement
• No visible wound or minimal scarring from the initial open fracture
• Full or near-full range of motion as healing progresses

Diagnosis

Diagnosis is based on clinical evaluation and imaging. A physical exam assesses pain, swelling, and range of motion. X-rays confirm the fracture type, alignment, and healing status. The "subsequent encounter" designation requires documentation of routine healing, such as callus formation or reduced fracture line visibility. Open fracture classification (type I or II) is confirmed by the initial injury documentation, with no current signs of infection or complications.

Treatment Options

Treatment focuses on monitoring and supporting continued healing. This may include:

• Immobilization (e.g., splint or cast) if stability is needed
• Pain management with over-the-counter or prescription medications
• Physical therapy to restore strength and range of motion
• Follow-up imaging to track healing progress
• Wound care if residual scarring is present (minimal for type I or II)

Prognosis and Follow-Up

Prognosis is generally favorable for nondisplaced fractures with routine healing. Most patients regain full function with proper care. Follow-up visits ensure the fracture heals without complications, such as malunion or nonunion. Activity modifications may be recommended until healing is complete, typically within 6–12 weeks, depending on the patient’s age and overall health.

Complications

• Delayed union or nonunion (rare with routine healing)
• Residual stiffness or reduced range of motion
• Chronic pain (uncommon)
• Infection (unlikely in routine healing phase)
• Malalignment if immobilization is insufficient

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider
• Use protective gear during sports or work to prevent falls
• Maintain bone health with a balanced diet and weight-bearing exercise
• Practice fall prevention strategies, especially for older adults (e.g., home modifications)
• Follow prescribed rehabilitation to restore function

When to Seek Professional Help

Seek care if:

• Pain worsens or does not improve with time
• Swelling, redness, or drainage from the injury site occurs
• New deformity or loss of function develops
• Fever or signs of infection (e.g., warmth, pus) are present
• Healing stalls or symptoms regress

Tips for Medical Coders

Code S52.355E is used for a subsequent encounter of a nondisplaced comminuted fracture of the left radius shaft with an open fracture type I or II that is healing routinely. Documentation must confirm the fracture is in a routine healing phase, with no complications or delayed union. The "subsequent encounter" modifier (E) indicates active healing, not initial treatment or sequela. Ensure the open fracture type (I or II) is clearly documented in the medical record to support coding accuracy.