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ICD-10 Guide
ICD-10 CodesS21.331

S21.331

Billable

Puncture wound without 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 S21.331 is a billable code used to indicate a diagnosis of puncture wound without foreign body of right front wall of thorax with penetration into thoracic cavity.

Key Diagnostic Point:

A puncture wound of the thorax occurs when a sharp object penetrates the skin and underlying tissues, resulting in an opening that can lead to serious complications. In the case of S21.331, the wound is specifically located on the right front wall of the thorax and has penetrated into the thoracic cavity. This type of injury can result in various complications, including pneumothorax (air in the pleural space), hemothorax (blood in the pleural space), and potential cardiac injuries. The presence of a puncture wound without a foreign body suggests that the injury is likely due to a sharp object, such as a knife or a broken rib, rather than a gunshot wound or other ballistic trauma. Clinicians must assess for rib fractures, which can accompany such injuries, and monitor for signs of respiratory distress or hemodynamic instability. Surgical intervention may be required to repair any damage to the pleura or to address any bleeding within the thoracic cavity. Accurate coding is essential for appropriate treatment and reimbursement, as well as for tracking injury patterns in trauma registries.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of anatomical terminology related to the thorax.
  • Differentiation from similar codes related to chest trauma.
  • Need for detailed documentation of the mechanism of injury.
  • Assessment of associated complications such as pneumothorax or hemothorax.

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury.
  • Failure to document associated complications.
  • Incorrect coding of the wound depth or type.
  • Lack of clarity regarding the presence of rib fractures.

Specialty Focus

Medical Specialties

Trauma Surgery

Documentation Requirements

Detailed operative reports and injury assessments.

Common Clinical Scenarios

Management of penetrating chest trauma, rib fractures, and thoracotomy procedures.

Billing Considerations

Ensure all surgical interventions and complications are documented thoroughly.

Emergency Medicine

Documentation Requirements

Comprehensive notes on patient assessment and treatment provided in the emergency department.

Common Clinical Scenarios

Initial evaluation and stabilization of patients with chest trauma.

Billing Considerations

Document vital signs and any immediate interventions performed.

Coding Guidelines

Inclusion Criteria

Use S21.331 When
  • According to ICD
  • 10 coding guidelines, S21
  • 331 should be used when there is a documented puncture wound to the right front wall of the thorax with penetration into the thoracic cavity
  • Coders must ensure that the documentation supports the diagnosis and that any associated complications are also coded appropriately

Exclusion Criteria

Do NOT use S21.331 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, the amount of fluid drained, and the patient's response.

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, including puncture wounds. This specificity aids in better tracking of trauma cases and improves the accuracy of treatment data.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of injuries, including puncture wounds. This specificity aids in better tracking of trauma cases and improves the accuracy of treatment data.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of injuries, including puncture wounds. This specificity aids in better tracking of trauma cases and improves the accuracy of treatment data.

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 S21.331 and S21.332?

S21.331 is used for puncture wounds without a foreign body, while S21.332 is for those with a foreign body present. Accurate documentation is crucial to determine which code to use.