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ICD-10 Guide
ICD-10 CodesS21.239

S21.239

Billable

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

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

Code Description

ICD-10 S21.239 is a billable code used to indicate a diagnosis of puncture wound without foreign body of unspecified back wall of thorax without penetration into thoracic cavity.

Key Diagnostic Point:

A puncture wound of the thorax refers to an injury where the skin and underlying tissues are penetrated, but without the introduction of a foreign body and without breaching the thoracic cavity. This type of injury can occur due to various mechanisms, including accidental trauma, such as a fall onto a sharp object or a stab wound. The back wall of the thorax is particularly vulnerable due to its anatomical position and the presence of ribs that can be fractured during such injuries. While the wound may not penetrate the thoracic cavity, it can still lead to complications such as pneumothorax (air in the pleural space) or hemothorax (blood in the pleural space) if the pleura is compromised. Clinical assessment is crucial to rule out underlying rib fractures or cardiac injuries, which may not be immediately apparent. Treatment typically involves wound care, monitoring for complications, and possibly imaging studies to assess for associated injuries. Accurate coding is essential for appropriate reimbursement and to reflect the severity of the injury in the patient's medical record.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between types of thoracic injuries
  • Assessing for associated rib fractures or pneumothorax
  • Understanding the implications of non-penetrating versus penetrating injuries
  • Documenting the absence of foreign bodies accurately

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury
  • Failure to assess for and document associated injuries
  • Misclassification of the wound type
  • Lack of follow-up documentation regarding complications

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Detailed documentation of the mechanism of injury, assessment findings, and any imaging results.

Common Clinical Scenarios

Patients presenting with stab wounds or accidental punctures to the thorax.

Billing Considerations

Ensure that all potential complications are documented, including any need for surgical intervention.

Trauma Surgery

Documentation Requirements

Comprehensive surgical notes detailing the procedure performed, findings, and post-operative care.

Common Clinical Scenarios

Patients requiring surgical intervention for thoracic injuries or complications arising from puncture wounds.

Billing Considerations

Accurate coding of associated procedures and any complications that arise during treatment.

Coding Guidelines

Inclusion Criteria

Use S21.239 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the documentation supports the diagnosis
  • Ensure that the injury is documented as not penetrating the thoracic cavity

Exclusion Criteria

Do NOT use S21.239 When
  • Exclude codes for penetrating wounds or those with foreign bodies

Related ICD-10 Codes

Related CPT Codes

12001CPT Code

Simple repair of superficial wounds

Clinical Scenario

Used for the repair of the puncture wound if suturing is required.

Documentation Requirements

Document the size of the wound and the method of repair.

Specialty Considerations

Ensure that the procedure is documented in the context of the injury.

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, which enhances the ability to capture the severity and nature of injuries accurately. This specificity aids in better patient management and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of injuries, including puncture wounds, which enhances the ability to capture the severity and nature of injuries accurately. This specificity aids in better patient management and resource allocation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of injuries, including puncture wounds, which enhances the ability to capture the severity and nature of injuries accurately. This specificity aids in better patient management and resource allocation.

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 a puncture wound and a penetrating wound?

A puncture wound is a type of injury where the skin is pierced but does not penetrate deeper structures, while a penetrating wound breaches deeper tissues, potentially affecting organs or cavities.