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ICD-10 Guide
ICD-10 CodesS21.201

S21.201

Billable

Unspecified open wound of right back wall of thorax without penetration into thoracic cavity

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

Code Description

ICD-10 S21.201 is a billable code used to indicate a diagnosis of unspecified open wound of right back wall of thorax without penetration into thoracic cavity.

Key Diagnostic Point:

An unspecified open wound of the right back wall of the thorax refers to a traumatic injury that results in a break in the skin and underlying tissues on the right side of the thoracic wall, specifically the back area. This type of injury can occur due to various mechanisms such as blunt trauma, penetrating injuries, or accidents. Importantly, this code specifies that there is no penetration into the thoracic cavity, which differentiates it from more severe injuries that may involve damage to internal organs such as the lungs or heart. Clinically, these wounds can lead to complications such as pneumothorax (air in the pleural space), hemothorax (blood in the pleural space), or rib fractures, which may require careful monitoring and management. The treatment may involve wound care, pain management, and in some cases, surgical intervention to repair any associated injuries or to prevent complications. Accurate coding is essential for proper 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

  • Variability in documentation of wound type and severity
  • Potential for associated injuries (e.g., rib fractures, pneumothorax)
  • Need for precise anatomical localization
  • Differentiation from similar codes for thoracic injuries

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury
  • Failure to document associated injuries
  • Misclassification of wound type
  • Lack of follow-up documentation on wound healing

Specialty Focus

Medical Specialties

Trauma Surgery

Documentation Requirements

Detailed descriptions of the injury mechanism, wound assessment, and any surgical interventions performed.

Common Clinical Scenarios

Trauma from motor vehicle accidents, falls, or sports injuries leading to thoracic wall injuries.

Billing Considerations

Ensure documentation reflects the extent of the injury and any associated complications.

Emergency Medicine

Documentation Requirements

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

Common Clinical Scenarios

Patients presenting with acute chest trauma following accidents or assaults.

Billing Considerations

Accurate coding requires thorough documentation of the patient's presentation and any immediate interventions.

Coding Guidelines

Inclusion Criteria

Use S21.201 When
  • According to ICD
  • 10 coding guidelines, this code should be used when the documentation specifies an open wound without penetration into the thoracic cavity
  • Coders should ensure that the injury is not classified under other specific codes that indicate more severe injuries

Exclusion Criteria

Do NOT use S21.201 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 open wound on the right back wall of the thorax.

Documentation Requirements

Document the size, location, and depth of the wound.

Specialty Considerations

Trauma surgeons should ensure that the repair is documented in detail.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of injuries, improving the accuracy of medical records and reimbursement processes. S21.201 provides a clear classification for open wounds without thoracic cavity penetration, which aids in clinical management and research.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of injuries, improving the accuracy of medical records and reimbursement processes. S21.201 provides a clear classification for open wounds without thoracic cavity penetration, which aids in clinical management and research.

Reimbursement & Billing Impact

reimbursement processes. S21.201 provides a clear classification for open wounds without thoracic cavity penetration, 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 S21.201 and S21.211?

S21.201 is used for open wounds without penetration into the thoracic cavity, while S21.211 is for wounds that do penetrate the thoracic cavity, indicating a more severe injury.