ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesS21.442

S21.442

Billable

Puncture wound with 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 S21.442 is a billable code used to indicate a diagnosis of puncture wound with foreign body of left back wall of thorax with penetration into thoracic cavity.

Key Diagnostic Point:

A puncture wound with a foreign body in the left back wall of the thorax that penetrates into the thoracic cavity is a serious injury that can lead to various complications. This type of injury often occurs due to trauma from sharp objects, such as knives or metal fragments, and can result in damage to the lungs, blood vessels, and other thoracic structures. The presence of a foreign body increases the risk of infection and may necessitate surgical intervention to remove the object and repair any damage. Clinically, patients may present with symptoms such as chest pain, difficulty breathing, and signs of respiratory distress. Diagnostic imaging, such as chest X-rays or CT scans, is essential to assess the extent of the injury and to identify any associated conditions like pneumothorax or hemothorax. Treatment may involve thoracotomy or thoracentesis, depending on the severity of the injury and the presence of fluid accumulation in the thoracic cavity. Close monitoring for complications, including cardiac injuries, is crucial in the management of these patients.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Involvement of multiple anatomical structures (lungs, blood vessels, etc.)
  • Potential for associated injuries (rib fractures, pneumothorax, hemothorax)
  • Need for detailed documentation of the mechanism of injury
  • Variability in treatment approaches based on injury severity

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury
  • Failure to document associated injuries or complications
  • Incorrect coding of the foreign body presence
  • Lack of imaging reports to support the diagnosis

Specialty Focus

Medical Specialties

Trauma Surgery

Documentation Requirements

Detailed operative reports and imaging studies are essential to support the diagnosis and treatment plan.

Common Clinical Scenarios

Management of stab wounds, gunshot wounds, or industrial accidents resulting in thoracic injuries.

Billing Considerations

Documentation must clearly outline the mechanism of injury, extent of damage, and any surgical interventions performed.

Emergency Medicine

Documentation Requirements

Accurate triage notes, initial assessment findings, and imaging results are critical.

Common Clinical Scenarios

Patients presenting with acute chest pain and respiratory distress following trauma.

Billing Considerations

Emergency physicians must document vital signs and any immediate interventions performed.

Coding Guidelines

Inclusion Criteria

Use S21.442 When
  • According to ICD
  • 10 guidelines, this code should be used when there is a documented puncture wound with a foreign body that penetrates the thoracic cavity
  • Coders must ensure that the documentation supports the diagnosis and includes details about the foreign body and any associated injuries

Exclusion Criteria

Do NOT use S21.442 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

32000CPT Code

Thoracentesis

Clinical Scenario

Used when fluid accumulation is present due to the puncture wound.

Documentation Requirements

Document the indication for the procedure and findings from imaging studies.

Specialty Considerations

Ensure that the procedure is linked to the diagnosis of the puncture wound.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of injuries, such as puncture wounds with foreign bodies, which enhances the accuracy of medical records and billing.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of injuries, such as puncture wounds with foreign bodies, which enhances the accuracy of medical records and billing.

Reimbursement & Billing Impact

billing.

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 in a puncture wound?

Documenting the foreign body is crucial as it affects the treatment plan, potential complications, and the specific coding required for accurate billing.