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ICD-10 Guide
ICD-10 CodesS21.91

S21.91

Billable

Laceration without foreign body of unspecified part of thorax

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

Code Description

ICD-10 S21.91 is a billable code used to indicate a diagnosis of laceration without foreign body of unspecified part of thorax.

Key Diagnostic Point:

S21.91 refers to a laceration of the thorax that does not involve a foreign body and is unspecified in terms of location. This type of injury can occur due to various mechanisms, including blunt trauma, penetrating trauma, or accidents. The thorax houses vital organs such as the heart and lungs, making lacerations in this area potentially serious. Complications may include rib fractures, pneumothorax (air in the pleural space), hemothorax (blood in the pleural space), and cardiac injuries. Accurate coding is essential for appropriate management and treatment planning. Patients may present with symptoms such as chest pain, difficulty breathing, or signs of shock. The management of thoracic lacerations may involve surgical intervention, especially if there is significant damage to underlying structures or if the injury is complicated by other thoracic conditions. Proper documentation of the mechanism of injury, associated symptoms, and any surgical procedures performed is crucial for accurate coding and billing.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in documentation of injury specifics
  • Potential for associated injuries (e.g., rib fractures, pneumothorax)
  • Need for precise anatomical location description
  • Differentiation from similar codes (e.g., S21.90 for unspecified thoracic injury)

Audit Risk Factors

  • Inadequate documentation of injury mechanism
  • Failure to document associated injuries
  • Lack of specificity in anatomical location
  • Inconsistent coding of surgical interventions

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Detailed account of the mechanism of injury, vital signs, and any immediate interventions performed.

Common Clinical Scenarios

Trauma cases from accidents, falls, or assaults leading to chest lacerations.

Billing Considerations

Ensure all associated injuries are documented, including rib fractures or pneumothorax.

Thoracic Surgery

Documentation Requirements

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

Common Clinical Scenarios

Surgical repair of thoracic lacerations, management of hemothorax or pneumothorax.

Billing Considerations

Document the extent of the laceration and any reconstructive efforts made.

Coding Guidelines

Inclusion Criteria

Use S21.91 When
  • Follow official ICD
  • 10 coding guidelines, ensuring that the laceration is documented as without foreign body and specifying the thoracic region involved

Exclusion Criteria

Do NOT use S21.91 When
  • Exclude codes for injuries with foreign bodies or those that are not lacerations

Related ICD-10 Codes

Related CPT Codes

99283CPT Code

Emergency department visit, moderate severity

Clinical Scenario

Used for initial evaluation of a patient with a thoracic laceration.

Documentation Requirements

Document the patient's history, examination findings, and treatment plan.

Specialty Considerations

Emergency medicine providers should ensure thorough 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 thoracic injuries, improving the accuracy of patient records and facilitating better treatment planning.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of thoracic injuries, improving the accuracy of patient records and facilitating better treatment planning.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of thoracic injuries, improving the accuracy of patient records and facilitating better treatment planning.

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 S21.91 and S21.90?

S21.91 specifies a laceration without foreign body, while S21.90 is an unspecified injury of the thorax that does not provide details about the type of injury.