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ICD-10 Guide
ICD-10 CodesS21.33

S21.33

Billable

Puncture wound 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 S21.33 is a billable code used to indicate a diagnosis of puncture wound without foreign body of front wall of thorax with penetration into thoracic cavity.

Key Diagnostic Point:

A puncture wound of the front wall of the thorax that penetrates into the thoracic cavity can result from various traumatic incidents, including stab wounds, gunshot wounds, or accidental injuries. This type of injury can lead to significant complications such as pneumothorax (air in the pleural space), hemothorax (blood in the pleural space), rib fractures, and potential cardiac injuries. The clinical presentation may include respiratory distress, chest pain, and signs of shock. Immediate assessment and intervention are critical, often requiring imaging studies like chest X-rays or CT scans to evaluate the extent of the injury. Surgical intervention may be necessary to repair damaged structures, drain fluid collections, or manage bleeding. The absence of a foreign body in the wound simplifies the management but does not negate the potential for serious complications. Accurate coding is essential for appropriate treatment and reimbursement, as well as for tracking outcomes in trauma care.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between types of thoracic injuries (e.g., pneumothorax vs. hemothorax)
  • Need for precise documentation of the mechanism of injury
  • Potential for associated injuries (e.g., rib fractures, cardiac injuries)
  • Variability in clinical presentation and treatment protocols

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury
  • Failure to document associated injuries
  • Misclassification of the type of thoracic injury
  • Inconsistent coding of surgical interventions

Specialty Focus

Medical Specialties

Trauma Surgery

Documentation Requirements

Detailed operative reports, imaging results, and follow-up notes are essential.

Common Clinical Scenarios

Management of stab wounds, gunshot wounds, and accidental puncture injuries.

Billing Considerations

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

Emergency Medicine

Documentation Requirements

Initial assessment notes, imaging results, and treatment plans must be comprehensive.

Common Clinical Scenarios

Acute management of chest trauma, including stabilization and preparation for transfer to surgery.

Billing Considerations

Accurate coding requires thorough documentation of the patient's condition upon arrival and any immediate interventions.

Coding Guidelines

Inclusion Criteria

Use S21.33 When
  • According to ICD
  • 10 guidelines, S21
  • 33 should be used when there is a documented puncture wound of the thorax with penetration into the thoracic cavity
  • It is important to ensure that the documentation specifies the absence of a foreign body and details any associated injuries

Exclusion Criteria

Do NOT use S21.33 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

32000CPT Code

Thoracentesis

Clinical Scenario

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

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 S21.33 for accurate billing.

39000CPT Code

Chest tube insertion

Clinical Scenario

Indicated for managing pneumothorax or hemothorax following a puncture wound.

Documentation Requirements

Document the indication, technique, and any complications during the procedure.

Specialty Considerations

Link the procedure to the diagnosis for proper reimbursement.

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 reimbursement processes.

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 reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

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 S21.33 and S21.32?

S21.33 is used for puncture wounds that penetrate the thoracic cavity, while S21.32 is for wounds that do not penetrate. The presence of penetration into the thoracic cavity increases the complexity and potential complications of the injury.