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ICD-10 Guide
ICD-10 CodesS12.04

S12.04

Billable

Lateral mass fracture of first cervical vertebra

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 S12.04 is a billable code used to indicate a diagnosis of lateral mass fracture of first cervical vertebra.

Key Diagnostic Point:

A lateral mass fracture of the first cervical vertebra (C1) is a specific type of injury that occurs in the upper cervical spine, typically resulting from high-energy trauma such as motor vehicle accidents, falls, or sports injuries. This fracture involves the lateral masses of the atlas, which are critical for supporting the skull and facilitating head movement. Clinically, patients may present with neck pain, limited range of motion, and neurological deficits depending on the extent of the injury and any associated spinal cord involvement. Diagnosis is primarily through imaging studies, including X-rays and CT scans, which can reveal the fracture's location and severity. Management often involves immobilization, pain control, and in some cases, surgical intervention to stabilize the spine and prevent further neurological compromise. Complications can include chronic pain, instability, and potential neurological deficits if not managed appropriately. Accurate coding is essential for proper treatment reimbursement and tracking of injury patterns.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and severity of the injury
  • Need for precise imaging interpretation
  • Potential for associated neurological injuries
  • Differentiation from other cervical spine injuries

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury
  • Failure to specify the type of fracture
  • Misinterpretation of imaging results
  • Lack of follow-up documentation on treatment outcomes

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Thorough documentation of the patient's presentation, mechanism of injury, and initial assessment findings is crucial.

Common Clinical Scenarios

Patients presenting after a fall or motor vehicle accident with neck pain and neurological symptoms.

Billing Considerations

Ensure that all imaging results and neurological assessments are documented to support the diagnosis.

Surgery

Documentation Requirements

Detailed operative reports and post-operative notes are necessary to capture the surgical intervention and outcomes.

Common Clinical Scenarios

Surgical stabilization of the cervical spine following a lateral mass fracture.

Billing Considerations

Document the surgical approach, fixation methods, and any intraoperative findings that may affect coding.

Coding Guidelines

Inclusion Criteria

Use S12.04 When
  • Follow the ICD
  • CM guidelines for coding injuries, ensuring that the specific site and type of fracture are accurately captured
  • Document the mechanism of injury and any associated conditions

Exclusion Criteria

Do NOT use S12.04 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

22551CPT Code

Anterior cervical discectomy and fusion

Clinical Scenario

Used in cases where surgical intervention is required for stabilization of the cervical spine.

Documentation Requirements

Operative report detailing the procedure, indications, and post-operative care.

Specialty Considerations

Ensure that the surgical approach and any complications are documented.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of cervical spine injuries, improving the granularity of data for tracking and treatment outcomes. S12.04 provides a clear designation for lateral mass fractures, which aids in clinical management and research.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of cervical spine injuries, improving the granularity of data for tracking and treatment outcomes. S12.04 provides a clear designation for lateral mass fractures, which aids in clinical management and research.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of cervical spine injuries, improving the granularity of data for tracking and treatment outcomes. S12.04 provides a clear designation for lateral mass fractures, which aids in clinical management and research.

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 mechanism of injury for a lateral mass fracture of C1?

The primary mechanism of injury is typically high-energy trauma, such as from motor vehicle accidents, falls, or sports-related injuries, which can cause axial loading or rotational forces on the cervical spine.