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ICD-10 Guide
ICD-10 CodesS21.112

S21.112

Billable

Laceration without foreign body of left front wall of thorax without penetration into thoracic cavity

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

Code Description

ICD-10 S21.112 is a billable code used to indicate a diagnosis of laceration without foreign body of left front wall of thorax without penetration into thoracic cavity.

Key Diagnostic Point:

S21.112 refers to a laceration of the left front wall of the thorax that does not involve a foreign body and does not penetrate the thoracic cavity. This type of injury is often the result of blunt or penetrating trauma, such as from a fall, motor vehicle accident, or an assault. Clinically, it is important to assess for associated injuries, including rib fractures, pneumothorax, hemothorax, or cardiac injuries, as these can complicate the management of the laceration. The absence of penetration into the thoracic cavity suggests that while the skin and possibly underlying soft tissues are damaged, vital structures such as the lungs and heart remain intact. Treatment typically involves wound care, possible suturing, and monitoring for complications. In cases where there is concern for deeper injury, imaging studies such as chest X-rays or CT scans may be warranted to rule out associated thoracic injuries.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between superficial and deep lacerations
  • Assessing for associated rib fractures or pneumothorax
  • Understanding the implications of non-penetrating versus penetrating injuries
  • Documentation of the mechanism of injury

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury
  • Failure to document associated injuries
  • Misclassification of the depth of the laceration
  • Inconsistent coding of follow-up visits

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Detailed description of the injury, mechanism of injury, and any associated injuries.

Common Clinical Scenarios

Patients presenting with trauma from falls, MVCs, or assaults.

Billing Considerations

Ensure all associated injuries are documented to avoid undercoding.

Surgery

Documentation Requirements

Operative reports detailing the laceration repair and any additional procedures performed.

Common Clinical Scenarios

Surgical intervention for laceration repair or management of associated thoracic injuries.

Billing Considerations

Document the extent of the laceration and any complications encountered during surgery.

Coding Guidelines

Inclusion Criteria

Use S21.112 When
  • Follow official ICD
  • CM guidelines for coding injuries, ensuring to document the specific location and nature of the laceration

Exclusion Criteria

Do NOT use S21.112 When
  • Exclude codes for penetrating injuries or those involving foreign bodies

Related ICD-10 Codes

Related CPT Codes

12001CPT Code

Simple repair of superficial wounds

Clinical Scenario

Used for repair of the laceration in the emergency department.

Documentation Requirements

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

Specialty Considerations

Emergency medicine providers should ensure accurate documentation of the injury mechanism.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of lacerations, improving the accuracy of data collection and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of lacerations, improving the accuracy of data collection and 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 S21.112 and S21.11?

S21.112 specifies a laceration of the left front wall of the thorax without penetration, while S21.11 is a more general code for lacerations of the thorax without specifying the side or depth.