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ICD-10 Guide
ICD-10 CodesM46.23

M46.23

Billable

Osteomyelitis of vertebra, cervicothoracic region

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/17/2025

Code Description

ICD-10 M46.23 is a billable code used to indicate a diagnosis of osteomyelitis of vertebra, cervicothoracic region.

Key Diagnostic Point:

Osteomyelitis of the vertebrae in the cervicothoracic region is an infection of the bone that can lead to significant morbidity if not diagnosed and treated promptly. This condition often arises from hematogenous spread, direct extension from adjacent infections, or post-surgical complications. Patients may present with localized pain, fever, and neurological deficits depending on the extent of the infection and any associated spinal cord involvement. Imaging studies, including MRI and CT scans, are crucial for diagnosis, revealing bone edema, abscess formation, and potential spinal instability. Treatment typically involves a combination of prolonged antibiotic therapy and, in some cases, surgical intervention to debride infected tissue or stabilize the spine. The cervicothoracic region is particularly vulnerable due to its anatomical complexity and proximity to vital structures, making early recognition and management essential to prevent complications such as paralysis or chronic pain syndromes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between osteomyelitis and other spinal conditions such as spondylitis or discitis.
  • Need for precise documentation of the infection's origin and extent.
  • Variability in clinical presentation and imaging findings.
  • Potential for co-existing conditions like ankylosing spondylitis complicating the diagnosis.

Audit Risk Factors

  • Inadequate documentation of the infection's etiology.
  • Failure to specify the exact vertebral levels involved.
  • Lack of imaging reports to support the diagnosis.
  • Misclassification of the condition as a non-infectious spondylopathy.

Specialty Focus

Medical Specialties

Orthopedic Surgery

Documentation Requirements

Detailed operative notes, imaging studies, and post-operative follow-up documentation.

Common Clinical Scenarios

Surgical intervention for abscess drainage or stabilization of the spine.

Billing Considerations

Ensure clear documentation of the surgical approach and any complications encountered.

Infectious Disease

Documentation Requirements

Comprehensive history of infection, laboratory results, and treatment plans.

Common Clinical Scenarios

Management of osteomyelitis with antibiotic therapy and monitoring for response.

Billing Considerations

Document the rationale for antibiotic choice and duration of therapy.

Coding Guidelines

Inclusion Criteria

Use M46.23 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the site and nature of the infection
  • Include any relevant history of prior spinal surgery or conditions that may predispose the patient to osteomyelitis

Exclusion Criteria

Do NOT use M46.23 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

22554CPT Code

Spinal fusion, cervical

Clinical Scenario

Used in cases where osteomyelitis leads to instability requiring surgical intervention.

Documentation Requirements

Operative report detailing the procedure and indication.

Specialty Considerations

Orthopedic surgeons must document the rationale for fusion in the context of infection.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of osteomyelitis, improving the ability to capture the complexity of spinal infections and their management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of osteomyelitis, improving the ability to capture the complexity of spinal infections and their management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of osteomyelitis, improving the ability to capture the complexity of spinal infections and their management.

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 are the common causes of osteomyelitis in the cervicothoracic region?

Common causes include hematogenous spread from distant infections, direct extension from adjacent soft tissue infections, and post-surgical complications.