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ICD-10 Guide
ICD-10 CodesM46.34

M46.34

Billable

Infection of intervertebral disc (pyogenic), thoracic region

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

Code Description

ICD-10 M46.34 is a billable code used to indicate a diagnosis of infection of intervertebral disc (pyogenic), thoracic region.

Key Diagnostic Point:

M46.34 refers to a pyogenic infection of the intervertebral disc located in the thoracic region of the spine. This condition is characterized by the presence of bacteria that invade the disc space, leading to inflammation, pain, and potential neurological deficits. Pyogenic discitis can occur due to hematogenous spread from distant infections, direct extension from adjacent osteomyelitis, or post-surgical complications. Clinically, patients may present with localized thoracic pain, fever, and neurological symptoms such as weakness or sensory changes, depending on the extent of the infection and any associated spinal cord involvement. Diagnosis typically involves imaging studies such as MRI, which can reveal disc space narrowing, edema, and abscess formation. Treatment often requires a combination of antibiotics and surgical intervention to debride infected tissue and stabilize the spine. Early recognition and management are crucial to prevent long-term complications, including chronic pain and disability.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Differentiating between pyogenic and non-pyogenic infections
  • Identifying the specific thoracic vertebrae involved
  • Understanding the implications of associated conditions like spondylitis
  • Navigating the documentation requirements for surgical interventions

Audit Risk Factors

  • Inadequate documentation of the infection type (pyogenic vs. non-pyogenic)
  • Failure to specify the thoracic region affected
  • Lack of supporting imaging studies in the medical record
  • Inconsistent coding of associated conditions like spondylitis

Specialty Focus

Medical Specialties

Orthopedic Surgery

Documentation Requirements

Detailed operative notes, imaging results, and post-operative follow-up documentation are essential.

Common Clinical Scenarios

Surgical intervention for discitis, management of spinal abscesses, and treatment of associated vertebral osteomyelitis.

Billing Considerations

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

Infectious Disease

Documentation Requirements

Comprehensive history of present illness, laboratory results, and antibiotic treatment plans must be documented.

Common Clinical Scenarios

Management of pyogenic infections, evaluation of systemic symptoms, and coordination with surgical teams.

Billing Considerations

Document the rationale for antibiotic selection and any changes in treatment based on culture results.

Coding Guidelines

Inclusion Criteria

Use M46.34 When
  • According to ICD
  • 10 guidelines, M46
  • 34 should be used when there is a confirmed diagnosis of pyogenic infection of the intervertebral disc in the thoracic region
  • Coders must ensure that the documentation supports the diagnosis and that any associated conditions are also coded appropriately

Exclusion Criteria

Do NOT use M46.34 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

63030CPT Code

Laminectomy, facetectomy, and foraminotomy

Clinical Scenario

Used in cases where surgical intervention is required for decompression due to infection.

Documentation Requirements

Operative report detailing the procedure and indication for surgery.

Specialty Considerations

Orthopedic surgeons must document the extent of the infection and any complications.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like M46.34, improving the accuracy of data collection and reimbursement processes. This specificity helps in better tracking of infection rates and outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like M46.34, improving the accuracy of data collection and reimbursement processes. This specificity helps in better tracking of infection rates and outcomes.

Reimbursement & Billing Impact

reimbursement processes. This specificity helps in better tracking of infection rates and outcomes.

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 cause of pyogenic infection of the intervertebral disc?

The primary cause is usually bacterial infection, which can occur through hematogenous spread from other infections, direct extension from adjacent osteomyelitis, or post-surgical complications.