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ICD-10 Guide
ICD-10 CodesS21.329

S21.329

Billable

Laceration with foreign body of unspecified front wall of thorax with penetration into thoracic cavity

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

Code Description

ICD-10 S21.329 is a billable code used to indicate a diagnosis of laceration with foreign body of unspecified front wall of thorax with penetration into thoracic cavity.

Key Diagnostic Point:

S21.329 describes a traumatic injury characterized by a laceration of the front wall of the thorax, which is accompanied by the presence of a foreign body that has penetrated into the thoracic cavity. This type of injury is often the result of blunt or penetrating trauma, such as stab wounds, gunshot wounds, or industrial accidents. The penetration into the thoracic cavity can lead to serious complications, including pneumothorax (air in the pleural space), hemothorax (blood in the pleural space), and potential cardiac injuries. The presence of a foreign body complicates the clinical picture, as it may necessitate surgical intervention to remove the object and repair any damage to the thoracic structures. Patients may present with respiratory distress, chest pain, and signs of shock, requiring immediate evaluation and management. Diagnostic imaging, such as chest X-rays or CT scans, is often utilized to assess the extent of the injury and guide treatment decisions. Surgical interventions may include thoracotomy or video-assisted thoracoscopic surgery (VATS) to address the injury and foreign body removal.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Presence of foreign body complicates the clinical picture.
  • Potential for multiple associated injuries (e.g., rib fractures, pneumothorax).
  • Need for detailed documentation of the mechanism of injury.
  • Variability in surgical interventions based on the extent of injury.

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury.
  • Failure to document the presence and type of foreign body.
  • Lack of clarity on associated injuries (e.g., pneumothorax, hemothorax).
  • Inconsistent coding of surgical interventions performed.

Specialty Focus

Medical Specialties

Trauma Surgery

Documentation Requirements

Detailed operative reports, imaging studies, and notes on the mechanism of injury.

Common Clinical Scenarios

Management of penetrating chest trauma, foreign body retrieval, and repair of thoracic injuries.

Billing Considerations

Accurate coding requires thorough documentation of all injuries and interventions performed.

Emergency Medicine

Documentation Requirements

Initial assessment notes, imaging results, and treatment plans.

Common Clinical Scenarios

Acute management of trauma patients presenting with chest injuries.

Billing Considerations

Timely documentation is crucial for accurate coding and billing.

Coding Guidelines

Inclusion Criteria

Use S21.329 When
  • According to ICD
  • 10 coding guidelines, S21
  • 329 should be used when there is a documented laceration with a foreign body that has penetrated the thoracic cavity
  • Coders must ensure that the documentation supports the diagnosis and that all associated injuries are captured accurately

Exclusion Criteria

Do NOT use S21.329 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

32000CPT Code

Thoracotomy, major, with or without rib resection

Clinical Scenario

Used in cases where surgical intervention is required to repair thoracic injuries.

Documentation Requirements

Operative report detailing the procedure and findings.

Specialty Considerations

Trauma surgeons must ensure accurate coding based on the complexity of the procedure.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of injuries, including those with foreign bodies. This specificity improves data accuracy and enhances the ability to track and analyze trauma cases.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of injuries, including those with foreign bodies. This specificity improves data accuracy and enhances the ability to track and analyze trauma cases.

Reimbursement & Billing Impact

reimbursement.

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 importance of documenting the foreign body?

Documenting the foreign body is crucial as it directly impacts the coding and the complexity of the case. It also influences treatment decisions and potential surgical interventions.