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v1.0.0
ICD-10 Guide
ICD-10 CodesS21.0

S21.0

Billable

Open wound of breast

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

Code Description

ICD-10 S21.0 is a billable code used to indicate a diagnosis of open wound of breast.

Key Diagnostic Point:

An open wound of the breast refers to a breach in the skin and underlying tissues of the breast, which can result from various traumatic events such as blunt or penetrating injuries. This condition may arise from accidents, surgical interventions, or violence. The clinical presentation can vary widely, from superficial lacerations to deep wounds that may involve underlying structures such as muscle, fat, and even the chest wall. In cases of significant trauma, associated injuries may include rib fractures, pneumothorax, hemothorax, or cardiac injuries, necessitating a comprehensive evaluation. The management of open wounds in the breast often requires surgical intervention to ensure proper healing and to prevent complications such as infection or excessive scarring. Accurate coding is essential for appropriate treatment planning and reimbursement, as well as for tracking outcomes in trauma care. Coders must be aware of the potential for associated injuries and the need for thorough documentation to support the complexity of the case.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in injury severity and associated complications
  • Potential for multiple associated injuries requiring additional codes
  • Need for detailed documentation to support the extent of the wound
  • Differentiation between open and closed wounds

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury
  • Failure to code associated injuries
  • Misclassification of wound type (open vs. closed)
  • Lack of specificity in describing the wound location

Specialty Focus

Medical Specialties

Trauma Surgery

Documentation Requirements

Detailed descriptions of the injury mechanism, extent of the wound, and any associated injuries.

Common Clinical Scenarios

Trauma from motor vehicle accidents, falls, or assaults resulting in breast injuries.

Billing Considerations

Documentation must reflect the urgency of care and any surgical interventions performed.

Plastic Surgery

Documentation Requirements

Comprehensive notes on the surgical approach, techniques used for wound closure, and aesthetic considerations.

Common Clinical Scenarios

Reconstructive surgery following trauma or cosmetic procedures that may involve open wounds.

Billing Considerations

Attention to detail in documenting the surgical plan and outcomes is crucial for accurate coding.

Coding Guidelines

Inclusion Criteria

Use S21.0 When
  • According to ICD
  • 10 guidelines, S21
  • 0 should be used for open wounds of the breast specifically
  • Coders must ensure that the code reflects the specific type of wound and any associated injuries

Exclusion Criteria

Do NOT use S21.0 When
  • Exclusions include closed wounds or injuries not involving the breast

Related ICD-10 Codes

Related CPT Codes

19303CPT Code

Mastectomy, partial

Clinical Scenario

Used in cases where surgical intervention is required for extensive open wounds.

Documentation Requirements

Operative notes detailing the procedure and any complications.

Specialty Considerations

Plastic surgeons may also be involved for reconstruction.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding open wounds, improving the accuracy of data collection and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding open wounds, improving the accuracy of data collection and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

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 S21.0 and S21.1?

S21.0 is used for open wounds of the breast, while S21.1 is for closed wounds. Accurate coding depends on the type of injury documented.