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ICD-10 Guide
ICD-10 CodesS21.31

S21.31

Billable

Laceration without foreign body of front wall of thorax with penetration into thoracic cavity

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

Code Description

ICD-10 S21.31 is a billable code used to indicate a diagnosis of laceration without foreign body of front wall of thorax with penetration into thoracic cavity.

Key Diagnostic Point:

S21.31 refers to a specific type of chest trauma characterized by a laceration of the front wall of the thorax that penetrates into the thoracic cavity but does not involve a foreign body. This condition can arise from various traumatic events, such as motor vehicle accidents, falls, or penetrating injuries. 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. Patients may present with symptoms such as chest pain, difficulty breathing, and signs of shock. Immediate medical evaluation is crucial, often involving imaging studies like chest X-rays or CT scans to assess the extent of the injury. Surgical intervention may be necessary to repair the laceration, control bleeding, or address any associated injuries to the lungs or heart. Proper coding of this condition requires thorough documentation of the mechanism of injury, clinical findings, and any surgical procedures performed.

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 requiring additional codes
  • Variability in clinical presentation and treatment approaches

Audit Risk Factors

  • Inadequate documentation of the injury mechanism
  • Failure to capture associated injuries or complications
  • Misinterpretation of imaging results
  • Inconsistent coding of surgical interventions

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Detailed account of the injury mechanism, vital signs, and initial assessment findings.

Common Clinical Scenarios

Trauma cases from accidents, falls, or assaults presenting with chest injuries.

Billing Considerations

Timely documentation is critical for accurate coding and reimbursement.

Thoracic Surgery

Documentation Requirements

Comprehensive operative reports detailing the surgical approach, findings, and any repairs made.

Common Clinical Scenarios

Patients requiring surgical intervention for lacerations or associated thoracic injuries.

Billing Considerations

Clear documentation of the extent of injury and any complications encountered during surgery.

Coding Guidelines

Inclusion Criteria

Use S21.31 When
  • According to ICD
  • 10 guidelines, S21
  • 31 should be used when there is a documented laceration of the thoracic wall with penetration into the thoracic cavity
  • It is important to ensure that the documentation specifies the absence of foreign bodies and details any associated injuries

Exclusion Criteria

Do NOT use S21.31 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

32000CPT Code

Thoracentesis

Clinical Scenario

Used to drain fluid or air from the pleural space in cases of hemothorax or pneumothorax.

Documentation Requirements

Document the indication for the procedure and findings.

Specialty Considerations

Emergency medicine and thoracic surgery may both perform this procedure.

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 data collection and reimbursement processes. S21.31 provides a clear distinction for lacerations without foreign bodies, which aids in clinical management and research.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of thoracic injuries, improving the accuracy of data collection and reimbursement processes. S21.31 provides a clear distinction for lacerations without foreign bodies, which aids in clinical management and research.

Reimbursement & Billing Impact

reimbursement processes. S21.31 provides a clear distinction for lacerations without foreign bodies, which aids in clinical management and research.

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 difference between S21.31 and S21.32?

S21.31 is used for lacerations without foreign bodies, while S21.32 is for lacerations that involve foreign bodies. Accurate documentation is crucial to determine which code to use.