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ICD-10 Guide
ICD-10 CodesS21.23

S21.23

Billable

Puncture wound without foreign body of back wall of thorax without penetration into thoracic cavity

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

Code Description

ICD-10 S21.23 is a billable code used to indicate a diagnosis of puncture wound without foreign body of back wall of thorax without penetration into thoracic cavity.

Key Diagnostic Point:

A puncture wound of the back wall of the thorax refers to an injury that penetrates the skin and underlying tissues but does not breach the thoracic cavity. This type of injury can occur due to various mechanisms, including sharp objects, falls, or accidents. Clinically, it is essential to assess the wound for signs of infection, bleeding, or damage to underlying structures such as muscles, nerves, and blood vessels. Unlike more severe injuries that penetrate the thoracic cavity, this condition typically does not involve complications such as pneumothorax or hemothorax. However, careful evaluation is necessary to rule out any associated rib fractures or cardiac injuries, especially in cases of significant trauma. Treatment may involve wound care, possible suturing, and monitoring for complications. Accurate coding is crucial 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

  • Differentiating between types of thoracic injuries
  • Assessing associated conditions like rib fractures
  • Understanding the implications of non-penetrating versus penetrating wounds
  • Documenting the absence of foreign bodies

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury
  • Failure to specify the absence of foreign bodies
  • Misclassification of the wound type
  • Omission of associated injuries like rib fractures

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Detailed description of the injury mechanism, assessment of vital signs, and any immediate interventions performed.

Common Clinical Scenarios

Patients presenting with stab wounds, falls, or accidents leading to thoracic puncture wounds.

Billing Considerations

Ensure that all associated injuries are documented to avoid undercoding.

Trauma Surgery

Documentation Requirements

Comprehensive surgical notes detailing the injury, surgical interventions, and post-operative care.

Common Clinical Scenarios

Surgical intervention for complex thoracic injuries, including repair of associated structures.

Billing Considerations

Accurate coding of any surgical procedures performed in conjunction with the injury.

Coding Guidelines

Inclusion Criteria

Use S21.23 When
  • According to ICD
  • 10 guidelines, S21
  • 23 should be used when the documentation specifies a puncture wound without foreign body and without penetration into the thoracic cavity
  • It is essential to ensure that the clinical documentation supports the diagnosis and that any associated injuries are coded appropriately

Exclusion Criteria

Do NOT use S21.23 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

12001CPT Code

Simple repair of superficial wounds

Clinical Scenario

Used for suturing the puncture wound if indicated.

Documentation Requirements

Document the size of the wound and the method of repair.

Specialty Considerations

Emergency medicine specialists should ensure that the repair is documented accurately.

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 puncture wounds. This specificity helps in better tracking of injury patterns 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 puncture wounds. This specificity helps in better tracking of injury patterns 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 puncture wounds. This specificity helps in better tracking of injury patterns 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 is the difference between S21.23 and S21.22?

S21.23 is used for puncture wounds without foreign bodies, while S21.22 is for those with foreign bodies present. Accurate documentation is crucial to determine the correct code.