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ICD-10 Guide
ICD-10 CodesS42.31

S42.31

Billable

Greenstick fracture of shaft of humerus

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/24/2025

Code Description

ICD-10 S42.31 is a billable code used to indicate a diagnosis of greenstick fracture of shaft of humerus.

Key Diagnostic Point:

A greenstick fracture of the shaft of the humerus is a type of incomplete fracture that occurs primarily in pediatric patients, where the bone bends and cracks on one side without breaking completely through. This type of fracture is analogous to bending a green twig, hence the name. The humerus, being the long bone of the upper arm, is susceptible to such fractures due to falls or direct trauma. Clinically, patients may present with localized pain, swelling, and limited range of motion in the shoulder and arm. Diagnosis is typically confirmed through radiographic imaging, which reveals the characteristic incomplete fracture line. Treatment often involves immobilization with a cast or splint, and in some cases, surgical intervention may be necessary if the fracture is unstable or if there is significant displacement. Understanding the nuances of this fracture type is crucial for accurate coding and appropriate management, especially in pediatric populations where growth plate considerations may also come into play.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between complete and incomplete fractures
  • Age of the patient affecting treatment options
  • Potential for associated injuries in the shoulder region
  • Documentation of fracture type and location

Audit Risk Factors

  • Inadequate documentation of fracture type
  • Failure to specify laterality (left or right humerus)
  • Misclassification of fracture severity
  • Lack of follow-up documentation on treatment outcomes

Specialty Focus

Medical Specialties

Orthopedic Surgery

Documentation Requirements

Detailed operative notes if surgical intervention is performed, including type of fixation used.

Common Clinical Scenarios

Management of pediatric fractures, surgical repair of unstable greenstick fractures.

Billing Considerations

Consideration of growth plate involvement and potential for future complications.

Pediatrics

Documentation Requirements

Thorough history and physical examination notes, including mechanism of injury.

Common Clinical Scenarios

Evaluation of arm pain in children post-fall, monitoring for growth-related issues.

Billing Considerations

Understanding of developmental milestones and implications of fractures on growth.

Coding Guidelines

Inclusion Criteria

Use S42.31 When
  • According to ICD
  • 10 guidelines, S42
  • 31 should be used when documenting a greenstick fracture of the shaft of the humerus
  • It is important to include laterality and any associated injuries in the documentation

Exclusion Criteria

Do NOT use S42.31 When
  • Exclusions include complete fractures or fractures involving the neck of the humerus

Related ICD-10 Codes

Related CPT Codes

23470CPT Code

Arthroscopy, shoulder, diagnostic, with or without synovial biopsy

Clinical Scenario

Used in conjunction with greenstick fracture management if there is suspicion of associated soft tissue injury.

Documentation Requirements

Operative report detailing findings and any interventions performed.

Specialty Considerations

Orthopedic surgeons should document the rationale for arthroscopy in the context of fracture management.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of fractures, including greenstick fractures, which enhances the ability to track and manage these injuries effectively. This specificity aids in better patient care and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of fractures, including greenstick fractures, which enhances the ability to track and manage these injuries effectively. This specificity aids in better patient care and resource allocation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of fractures, including greenstick fractures, which enhances the ability to track and manage these injuries effectively. This specificity aids in better 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 a greenstick fracture?

A greenstick fracture is an incomplete fracture that occurs primarily in children, where the bone bends and cracks on one side without breaking completely through, resembling the bending of a green twig.