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ICD-10 Guide
ICD-10 CodesM46.51

M46.51

Billable

Other infective spondylopathies, occipito-atlanto-axial region

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

Code Description

ICD-10 M46.51 is a billable code used to indicate a diagnosis of other infective spondylopathies, occipito-atlanto-axial region.

Key Diagnostic Point:

M46.51 refers to a specific category of spondylopathies characterized by infectious processes affecting the occipito-atlanto-axial region of the spine. This condition can arise from various infectious agents, including bacteria, fungi, or viruses, leading to inflammation and potential structural damage to the vertebrae and surrounding tissues. Symptoms may include severe neck pain, stiffness, and neurological deficits due to compression of spinal structures. Diagnosis typically involves imaging studies such as MRI or CT scans, along with laboratory tests to identify the causative organism. Treatment often requires a multidisciplinary approach, including antibiotics or antifungal medications, physical therapy, and in some cases, surgical intervention to relieve pressure on the spinal cord or nerves. The complexity of this condition lies in its potential overlap with other inflammatory spine diseases, such as ankylosing spondylitis, and the need for precise identification of the infectious agent to guide appropriate treatment.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Differentiation from other inflammatory spine conditions
  • Need for precise identification of infectious agents
  • Potential for overlapping symptoms with ankylosing spondylitis
  • Variability in clinical presentation

Audit Risk Factors

  • Inadequate documentation of infectious etiology
  • Failure to specify the location of the infection
  • Misclassification with non-infective spondylopathies
  • Lack of supporting imaging or lab results

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed history of infection, lab results, and treatment plans.

Common Clinical Scenarios

Patients presenting with fever, neck pain, and neurological symptoms.

Billing Considerations

Need for clear documentation of the infectious agent and treatment response.

Orthopedic Surgery

Documentation Requirements

Surgical notes, imaging studies, and post-operative care documentation.

Common Clinical Scenarios

Patients requiring surgical intervention for decompression due to infection.

Billing Considerations

Documentation must reflect the urgency and necessity of surgical procedures.

Coding Guidelines

Inclusion Criteria

Use M46.51 When
  • Follow official ICD
  • CM coding guidelines, ensuring accurate documentation of the infectious process and its location
  • Include any relevant lab results and imaging findings to support the diagnosis

Exclusion Criteria

Do NOT use M46.51 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

73030CPT Code

CT scan of the cervical spine

Clinical Scenario

Used to evaluate for abscess or infection in the occipito-atlanto-axial region.

Documentation Requirements

Indicate clinical indications for the scan and any prior imaging.

Specialty Considerations

Orthopedic and Infectious Disease specialists should coordinate documentation.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of infective spondylopathies, improving the accuracy of data collection and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of infective spondylopathies, improving the accuracy of data collection and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

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 infective spondylopathies?

Common causes include bacterial infections such as Staphylococcus aureus, tuberculosis, and fungal infections. Viral infections can also lead to inflammatory changes in the spine.