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ICD-10 Guide
ICD-10 CodesS21.229

S21.229

Billable

Laceration with 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 S21.229 is a billable code used to indicate a diagnosis of laceration with foreign body of unspecified back wall of thorax without penetration into thoracic cavity.

Key Diagnostic Point:

S21.229 refers to a laceration of the back wall of the thorax where a foreign body is present but does not penetrate the thoracic cavity. This type of injury can occur due to various traumatic events, such as accidents or assaults, where sharp objects or debris can cause significant damage to the skin and underlying tissues. The thoracic wall is composed of skin, muscles, ribs, and connective tissues, and injuries in this area can lead to complications such as pneumothorax (air in the pleural space), hemothorax (blood in the pleural space), or rib fractures. While this specific code indicates that there is no penetration into the thoracic cavity, it is crucial to assess for potential complications that may arise from the laceration. Proper management may involve wound care, removal of the foreign body, and monitoring for any signs of respiratory distress or other complications. Surgical intervention may be necessary if the laceration is extensive or if there are associated injuries to the ribs or other thoracic structures.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Presence of foreign body complicates the injury assessment.
  • Potential for associated injuries such as pneumothorax or hemothorax.
  • Need for detailed documentation of the injury mechanism.
  • Variability in treatment approaches based on injury severity.

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury.
  • Failure to note the presence of a foreign body.
  • Misclassification of the injury type or location.
  • Lack of follow-up documentation regarding complications.

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Detailed account of the injury mechanism, foreign body description, and any immediate interventions performed.

Common Clinical Scenarios

Patients presenting with trauma from accidents, falls, or assaults with visible lacerations.

Billing Considerations

Ensure all potential complications are documented, including imaging results if pneumothorax or hemothorax is suspected.

Surgery

Documentation Requirements

Operative reports detailing the laceration repair, foreign body removal, and any associated procedures.

Common Clinical Scenarios

Surgical intervention for extensive lacerations or when foreign bodies are lodged in the thoracic wall.

Billing Considerations

Document the extent of the laceration and any additional thoracic injuries that may require surgical attention.

Coding Guidelines

Inclusion Criteria

Use S21.229 When
  • According to ICD
  • CM guidelines, this code should be used when the laceration is confirmed to have a foreign body present but does not penetrate the thoracic cavity
  • Coders must ensure that the documentation supports the diagnosis and that any associated injuries are coded appropriately

Exclusion Criteria

Do NOT use S21.229 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

12001CPT Code

Simple repair of superficial wounds

Clinical Scenario

Used for repair of the laceration without complications.

Documentation Requirements

Document the size and depth of the laceration, as well as the foreign body removal if applicable.

Specialty Considerations

Emergency medicine providers should ensure that all aspects of the injury are documented.

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 those with foreign bodies. This specificity helps in better tracking of injury types and outcomes, which can improve patient care and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of injuries, including those with foreign bodies. This specificity helps in better tracking of injury types and outcomes, which can improve patient care and resource allocation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of injuries, including those with foreign bodies. This specificity helps in better tracking of injury types and outcomes, which can improve patient care 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 should I document for a laceration with a foreign body?

Document the mechanism of injury, the type and size of the foreign body, the depth of the laceration, and any associated injuries or complications.