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v1.0.0
ICD-10 Guide
ICD-10 CodesS21.432

S21.432

Billable

Puncture wound without foreign body of left back wall of thorax with penetration into thoracic cavity

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/23/2025

Code Description

ICD-10 S21.432 is a billable code used to indicate a diagnosis of puncture wound without foreign body of left back wall of thorax with penetration into thoracic cavity.

Key Diagnostic Point:

A puncture wound of the thorax, specifically the left back wall, indicates a breach in the thoracic cavity that can lead to serious complications. This type of injury often results from penetrating trauma, such as a stab wound or a gunshot wound, and can compromise vital structures within the thoracic cavity, including the lungs, heart, and major blood vessels. The absence of a foreign body suggests that the wound is clean, but the potential for pneumothorax (air in the pleural space), hemothorax (blood in the pleural space), or cardiac injury remains significant. Clinical evaluation typically involves imaging studies such as chest X-rays or CT scans to assess for these complications. Management may require thoracentesis or chest tube placement to relieve pressure and restore normal respiratory function. Surgical intervention may be necessary if there is significant damage to thoracic organs or if bleeding cannot be controlled. Accurate coding is essential for appropriate treatment planning and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Need for precise documentation of the mechanism of injury
  • Differentiation between types of thoracic injuries (e.g., pneumothorax vs. hemothorax)
  • Potential for associated injuries (e.g., rib fractures, cardiac injuries)
  • Variability in treatment approaches based on injury severity

Audit Risk Factors

  • Inadequate documentation of the injury mechanism
  • Failure to document associated injuries or complications
  • Incorrect coding of the type of thoracic injury
  • Lack of imaging results in the medical record

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Detailed account of the injury mechanism, vital signs, and initial management steps.

Common Clinical Scenarios

Patients presenting with stab or gunshot wounds to the thorax.

Billing Considerations

Timely documentation is crucial for trauma cases; ensure all imaging and interventions are recorded.

Thoracic Surgery

Documentation Requirements

Operative reports detailing surgical interventions and findings.

Common Clinical Scenarios

Patients requiring surgical repair of thoracic injuries or drainage of pleural effusions.

Billing Considerations

Accurate coding of surgical procedures performed in conjunction with the injury is essential.

Coding Guidelines

Inclusion Criteria

Use S21.432 When
  • Follow official coding guidelines for trauma coding, ensuring accurate documentation of the injury site, mechanism, and any associated injuries
  • Include imaging results and treatment details in the medical record

Exclusion Criteria

Do NOT use S21.432 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

32551CPT Code

Thoracentesis, needle drainage of pleural space

Clinical Scenario

Used for patients with pleural effusion or pneumothorax.

Documentation Requirements

Document indication for procedure, imaging results, and patient consent.

Specialty Considerations

Ensure compliance with local guidelines for thoracentesis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of thoracic injuries, improving the accuracy of claims and enhancing patient care through better data collection.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of thoracic injuries, improving the accuracy of claims and enhancing patient care through better data collection.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of thoracic injuries, improving the accuracy of claims and enhancing patient care through better data collection.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What is the significance of coding S21.432 accurately?

Accurate coding of S21.432 is crucial for appropriate treatment planning, reimbursement, and tracking of trauma-related outcomes. It ensures that healthcare providers are compensated for the complexity of care required for thoracic injuries.