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ICD-10 Guide
ICD-10 CodesS21.101

S21.101

Billable

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

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

Code Description

ICD-10 S21.101 is a billable code used to indicate a diagnosis of unspecified open wound of right front wall of thorax without penetration into thoracic cavity.

Key Diagnostic Point:

An unspecified open wound of the right front wall of the thorax refers to a traumatic injury that results in a break in the skin and underlying tissues in the right anterior thoracic region. This type of injury can occur due to various mechanisms, including blunt trauma from accidents, falls, or penetrating injuries from sharp objects. Importantly, this code specifies that the wound does not penetrate the thoracic cavity, which differentiates it from more severe injuries that could involve damage to internal organs such as the lungs, heart, or major blood vessels. Clinically, patients may present with pain, swelling, and possible deformity in the chest area. Assessment may include imaging studies to rule out associated injuries like rib fractures, pneumothorax, or hemothorax. Treatment typically involves wound care, pain management, and monitoring for complications. In cases where there is concern for deeper injuries, further surgical intervention may be necessary. Accurate coding is essential for appropriate management and billing, as it impacts the overall treatment plan and potential surgical interventions.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in documentation of wound depth and extent
  • Differentiation from similar codes for penetrating injuries
  • Need for precise anatomical terminology
  • Potential for associated injuries requiring additional codes

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury
  • Failure to document associated injuries (e.g., rib fractures)
  • Ambiguity in the description of the wound
  • Inconsistent coding practices among providers

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Detailed description of the mechanism of injury, assessment of vital signs, and any imaging results.

Common Clinical Scenarios

Patients presenting with chest trauma from motor vehicle accidents or falls.

Billing Considerations

Ensure documentation reflects the extent of the injury and any immediate interventions performed.

General Surgery

Documentation Requirements

Operative reports detailing the nature of the wound, any surgical interventions performed, and post-operative care.

Common Clinical Scenarios

Surgical repair of chest wall injuries or management of complications like pneumothorax.

Billing Considerations

Accurate coding of any additional procedures performed during surgery is crucial.

Coding Guidelines

Inclusion Criteria

Use S21.101 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the documentation supports the diagnosis
  • The code should only be used when there is no penetration into the thoracic cavity, and any associated injuries must be coded separately

Exclusion Criteria

Do NOT use S21.101 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

12001CPT Code

Simple repair of superficial wounds

Clinical Scenario

Used for the repair of the open wound on the right thorax.

Documentation Requirements

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

Specialty Considerations

Emergency medicine providers 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 data collection and reimbursement processes. This code allows for better tracking of chest trauma cases and associated complications.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of injuries, improving the accuracy of data collection and reimbursement processes. This code allows for better tracking of chest trauma cases and associated complications.

Reimbursement & Billing Impact

reimbursement processes. This code allows for better tracking of chest trauma cases and associated complications.

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 S21.101 and S21.102?

S21.101 refers to an open wound on the right front wall of the thorax, while S21.102 refers to the left front wall. The choice of code depends on the specific location of the injury.