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ICD-10 Guide
ICD-10 CodesS21.321

S21.321

Billable

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

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

Code Description

ICD-10 S21.321 is a billable code used to indicate a diagnosis of laceration with foreign body of right front wall of thorax with penetration into thoracic cavity.

Key Diagnostic Point:

S21.321 describes a traumatic injury characterized by a laceration on the right front wall of the thorax, which has been complicated by the presence of a foreign body that has penetrated into the thoracic cavity. This type of injury often results from penetrating trauma, such as stab wounds or gunshot wounds, and can lead to significant complications including pneumothorax, hemothorax, and potential cardiac injuries. The thoracic cavity houses vital organs, including the lungs and heart, making such injuries particularly dangerous. The presence of a foreign body can exacerbate the injury, leading to infection, further tissue damage, and complications requiring surgical intervention. Clinical management may involve imaging studies to assess the extent of the injury, thoracentesis or chest tube placement for fluid management, and possibly surgical repair to address both the laceration and the foreign body. Accurate coding is essential for appropriate treatment planning and reimbursement.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Requires detailed documentation of the mechanism of injury.
  • Involves understanding of anatomical locations and implications of thoracic injuries.
  • Potential for multiple associated injuries (e.g., rib fractures, pneumothorax).
  • Need for precise coding to reflect the severity and specifics of the injury.

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury.
  • Failure to specify the presence and type of foreign body.
  • Lack of imaging reports to support the diagnosis.
  • Misclassification of the injury severity.

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, surgical intervention for foreign body removal.

Billing Considerations

Ensure all findings from imaging and surgical procedures are documented to support coding.

Emergency Medicine

Documentation Requirements

Initial assessment notes, imaging results, and treatment plans.

Common Clinical Scenarios

Emergency evaluation of trauma patients with chest injuries.

Billing Considerations

Accurate documentation of vital signs and immediate interventions is crucial.

Coding Guidelines

Inclusion Criteria

Use S21.321 When
  • Follow official coding guidelines for trauma coding, ensuring to capture the specifics of the injury, including the presence of foreign bodies and any associated complications
  • Include any relevant external cause codes if applicable

Exclusion Criteria

Do NOT use S21.321 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

32000CPT Code

Thoracentesis

Clinical Scenario

Used for drainage of fluid in cases of hemothorax or pneumothorax.

Documentation Requirements

Document the indication for the procedure and the amount of fluid removed.

Specialty Considerations

Ensure that the procedure is linked to the diagnosis of S21.321.

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 diagnosis and treatment planning. S21.321 provides a clear distinction for injuries involving foreign bodies, which is critical for appropriate management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of thoracic injuries, improving the accuracy of diagnosis and treatment planning. S21.321 provides a clear distinction for injuries involving foreign bodies, which is critical for appropriate management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of thoracic injuries, improving the accuracy of diagnosis and treatment planning. S21.321 provides a clear distinction for injuries involving foreign bodies, which is critical for appropriate management.

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 S21.321 accurately?

Accurate coding of S21.321 is crucial for appropriate treatment planning, reimbursement, and tracking of trauma cases. It ensures that the severity of the injury is recognized and managed effectively.