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ICD-10 Guide
ICD-10 CodesS21.2

S21.2

Billable

Open wound of back wall of thorax without penetration into thoracic cavity

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

Code Description

ICD-10 S21.2 is a billable code used to indicate a diagnosis of open wound of back wall of thorax without penetration into thoracic cavity.

Key Diagnostic Point:

An open wound of the back wall of the thorax refers to a laceration or puncture that affects the skin and underlying tissues of the thoracic wall, specifically the posterior aspect, without breaching the thoracic cavity. This type of injury can occur due to blunt or penetrating trauma, such as from a fall, motor vehicle accident, or stab wound. While the wound may be superficial, it can still pose significant risks, including infection, bleeding, and damage to underlying structures such as muscles, nerves, and blood vessels. It is crucial to assess for associated injuries, such as rib fractures, pneumothorax, or hemothorax, which may complicate the clinical picture. The management of such wounds typically involves thorough cleaning, debridement, and possibly suturing, depending on the extent of the injury. Surgical intervention may be necessary if there is significant soft tissue damage or if associated thoracic injuries are present. Accurate coding requires careful documentation of the wound's characteristics and any related injuries to ensure appropriate treatment and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between open and closed wounds
  • Assessing for associated thoracic injuries
  • Documenting the extent and nature of the wound
  • Understanding the implications of potential complications

Audit Risk Factors

  • Inadequate documentation of the wound's characteristics
  • Failure to document associated injuries
  • Misclassification of the wound type (open vs. closed)
  • Inconsistent coding of related procedures

Specialty Focus

Medical Specialties

Trauma Surgery

Documentation Requirements

Detailed descriptions of the wound, associated injuries, and surgical interventions performed.

Common Clinical Scenarios

Management of traumatic thoracic injuries, including open wounds and rib fractures.

Billing Considerations

Ensure documentation reflects the mechanism of injury and any complications.

Emergency Medicine

Documentation Requirements

Comprehensive assessment of the patient's condition upon arrival, including vital signs and initial treatment.

Common Clinical Scenarios

Evaluation and stabilization of patients with thoracic trauma.

Billing Considerations

Document all interventions and patient responses to treatment.

Coding Guidelines

Inclusion Criteria

Use S21.2 When
  • According to ICD
  • 10 coding guidelines, S21
  • 2 should be used when there is an open wound of the back wall of the thorax without penetration into the thoracic cavity
  • It is essential to document the mechanism of injury and any associated conditions

Exclusion Criteria

Do NOT use S21.2 When
  • Exclusions include wounds that penetrate the thoracic cavity or are classified under different codes for specific types of injuries

Related ICD-10 Codes

Related CPT Codes

12001CPT Code

Simple repair of superficial wounds

Clinical Scenario

Used for suturing an open wound of the thorax.

Documentation Requirements

Document the size and depth of the wound, as well as the method of repair.

Specialty Considerations

Trauma surgeons should ensure that all associated injuries 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 thoracic injuries, improving the accuracy of data collection and reimbursement. S21.2 provides a clear distinction for open wounds of the back wall of the thorax, which aids in clinical management and research.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of thoracic injuries, improving the accuracy of data collection and reimbursement. S21.2 provides a clear distinction for open wounds of the back wall of the thorax, which aids in clinical management and research.

Reimbursement & Billing Impact

reimbursement. S21.2 provides a clear distinction for open wounds of the back wall of the thorax, which aids in clinical management and research.

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 S21.2 and S21.0?

S21.2 refers specifically to an open wound of the back wall of the thorax, while S21.0 pertains to the front wall. The coding distinction is important for accurate documentation and treatment planning.