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ICD-10 Guide
ICD-10 CodesS21.231

S21.231

Billable

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

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

Code Description

ICD-10 S21.231 is a billable code used to indicate a diagnosis of puncture wound without foreign body of right back wall of thorax without penetration into thoracic cavity.

Key Diagnostic Point:

A puncture wound of the thorax refers to an injury characterized by a sharp object penetrating the skin and underlying tissues of the thoracic wall without entering the thoracic cavity. In the case of S21.231, the injury is localized to the right back wall of the thorax. Such wounds can occur due to various incidents, including accidents, falls, or assaults. Clinically, these injuries may present with localized pain, swelling, and tenderness at the site of the wound. While the absence of a foreign body reduces the risk of infection and complications, careful assessment is necessary to rule out associated injuries such as rib fractures, pneumothorax, or hemothorax. Rib fractures may occur due to the force of the injury, leading to potential complications like lung puncture. Pneumothorax, characterized by air in the pleural space, and hemothorax, the accumulation of blood, are critical conditions that must be evaluated through imaging studies. Cardiac injuries, although less common, can occur with significant trauma to the thorax. Surgical interventions may be required if complications arise, necessitating thorough documentation of the injury and any subsequent treatment.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between types of thoracic injuries
  • Assessing for associated rib fractures or pneumothorax
  • Documenting the absence of foreign bodies
  • Understanding the implications of thoracic wall injuries

Audit Risk Factors

  • Inadequate documentation of the injury mechanism
  • Failure to assess for associated rib fractures or pneumothorax
  • Misclassification of the wound type
  • Lack of follow-up documentation on treatment outcomes

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Detailed account of the injury mechanism, physical examination findings, and any imaging results.

Common Clinical Scenarios

Patients presenting with stab wounds, gunshot wounds, or accidental punctures.

Billing Considerations

Ensure that all potential complications are documented, including imaging studies and consultations.

Trauma Surgery

Documentation Requirements

Comprehensive surgical notes detailing the procedure, findings, and any complications.

Common Clinical Scenarios

Surgical intervention for thoracic injuries, including repair of rib fractures or drainage of hemothorax.

Billing Considerations

Accurate coding of surgical procedures and associated diagnoses is crucial for reimbursement.

Coding Guidelines

Inclusion Criteria

Use S21.231 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of the injury type and associated conditions

Exclusion Criteria

Do NOT use S21.231 When
  • Exclude codes for penetrating wounds that involve the thoracic cavity

Related ICD-10 Codes

Related CPT Codes

99283CPT Code

Emergency department visit, moderate severity

Clinical Scenario

Used for initial evaluation of the puncture wound.

Documentation Requirements

Document the history, examination findings, and any imaging performed.

Specialty Considerations

Emergency medicine specialists should ensure thorough documentation to support the level of service.

32000CPT Code

Thoracentesis

Clinical Scenario

Performed if there is suspicion of pleural effusion.

Documentation Requirements

Document indications for the procedure and findings.

Specialty Considerations

Ensure that the procedure is linked to the diagnosis of hemothorax or pleural effusion.

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. S21.231 provides a clear distinction from other thoracic injuries, aiding 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. S21.231 provides a clear distinction from other thoracic injuries, aiding in clinical management and research.

Reimbursement & Billing Impact

reimbursement processes. S21.231 provides a clear distinction from other thoracic injuries, aiding 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 S21.231 and S21.221?

S21.231 refers to a puncture wound without a foreign body, while S21.221 indicates a puncture wound with a foreign body present. Accurate documentation is essential to determine the correct code.