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ICD-10 Guide
ICD-10 CodesS21.459

S21.459

Billable

Open bite of unspecified back wall of thorax with penetration into thoracic cavity

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

Code Description

ICD-10 S21.459 is a billable code used to indicate a diagnosis of open bite of unspecified back wall of thorax with penetration into thoracic cavity.

Key Diagnostic Point:

An open bite of the thorax, particularly the back wall, represents a traumatic injury that penetrates the thoracic cavity. This type of injury can occur due to various mechanisms, including animal bites, sharp objects, or severe blunt trauma that results in laceration. The penetration into the thoracic cavity can lead to serious complications such as pneumothorax, hemothorax, or damage to vital structures including the lungs, heart, and major blood vessels. Clinical presentation may include respiratory distress, chest pain, and signs of shock. Immediate medical intervention is critical to manage potential complications, which may involve surgical exploration and repair of the thoracic wall and any damaged internal structures. The complexity of treatment and the potential for significant morbidity necessitate careful documentation and coding to ensure appropriate reimbursement and tracking of outcomes.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Variety of potential complications (e.g., pneumothorax, hemothorax)
  • Need for surgical intervention and potential for multiple procedures
  • Variability in clinical presentation and severity of injury
  • Documentation of mechanism of injury and associated injuries

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury
  • Failure to document associated injuries or complications
  • Misclassification of the injury type (e.g., open vs. closed)
  • Lack of clarity in surgical notes regarding interventions performed

Specialty Focus

Medical Specialties

Trauma Surgery

Documentation Requirements

Detailed operative reports, imaging studies, and notes on patient assessment and management.

Common Clinical Scenarios

Management of penetrating thoracic injuries, surgical repair of rib fractures, and treatment of associated complications.

Billing Considerations

Accurate coding requires comprehensive documentation of all procedures performed and any complications encountered.

Emergency Medicine

Documentation Requirements

Thorough documentation of initial assessment, imaging results, and treatment provided in the emergency setting.

Common Clinical Scenarios

Initial evaluation and stabilization of patients with thoracic trauma, including open bites.

Billing Considerations

Timely documentation is crucial for accurate coding and reimbursement, especially in acute care settings.

Coding Guidelines

Inclusion Criteria

Use S21.459 When
  • Follow official ICD
  • CM coding guidelines, ensuring accurate documentation of the injury type, mechanism, and any associated complications
  • Include details on the patient's clinical status and any surgical interventions performed

Exclusion Criteria

Do NOT use S21.459 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

32000CPT Code

Thoracentesis

Clinical Scenario

Used for drainage of pleural effusion or hemothorax in patients with thoracic injuries.

Documentation Requirements

Document indication for procedure, patient consent, and post-procedure assessment.

Specialty Considerations

Ensure that the procedure is linked to the diagnosis of thoracic injury.

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 open bites with complications. This specificity improves data collection and enhances the ability to track outcomes and resource utilization.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of injuries, including open bites with complications. This specificity improves data collection and enhances the ability to track outcomes and resource utilization.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of injuries, including open bites with complications. This specificity improves data collection and enhances the ability to track outcomes and resource utilization.

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 primary concern with an open bite to the thorax?

The primary concern is the potential for penetration into the thoracic cavity, which can lead to serious complications such as pneumothorax, hemothorax, and damage to vital organs.