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ICD-10 Guide
ICD-10 CodesM46.97

M46.97

Billable

Unspecified inflammatory spondylopathy, lumbosacral region

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

Code Description

ICD-10 M46.97 is a billable code used to indicate a diagnosis of unspecified inflammatory spondylopathy, lumbosacral region.

Key Diagnostic Point:

Unspecified inflammatory spondylopathy in the lumbosacral region refers to a group of inflammatory conditions affecting the spine, particularly in the lower back area. This condition is characterized by inflammation of the vertebrae and surrounding tissues, which can lead to pain, stiffness, and reduced mobility. It may be associated with other inflammatory diseases, such as ankylosing spondylitis, which primarily affects the sacroiliac joints and can lead to fusion of the spine over time. The lumbosacral region is particularly vulnerable due to its weight-bearing function and range of motion. Symptoms often include chronic lower back pain, which may worsen with inactivity and improve with movement. Diagnosis typically involves clinical evaluation, imaging studies, and laboratory tests to rule out other conditions. Treatment may include anti-inflammatory medications, physical therapy, and in some cases, surgical intervention. Accurate coding is essential for proper management and reimbursement, as it reflects the complexity and severity of the patient's condition.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and symptoms
  • Overlap with other inflammatory spine conditions
  • Need for comprehensive documentation to support diagnosis
  • Potential for misdiagnosis with non-inflammatory conditions

Audit Risk Factors

  • Insufficient documentation of symptoms and clinical findings
  • Lack of imaging studies to support diagnosis
  • Inconsistent use of terminology in medical records
  • Failure to document treatment plans and responses

Specialty Focus

Medical Specialties

Rheumatology

Documentation Requirements

Detailed history of symptoms, physical examination findings, and results from imaging and laboratory tests.

Common Clinical Scenarios

Patients presenting with chronic lower back pain, stiffness, and a family history of inflammatory diseases.

Billing Considerations

Ensure clear documentation of inflammatory markers and response to treatment.

Orthopedics

Documentation Requirements

Comprehensive assessment of spinal alignment, mobility, and functional limitations.

Common Clinical Scenarios

Patients with progressive back pain and mobility issues requiring surgical evaluation.

Billing Considerations

Document any surgical interventions or referrals to rheumatology for comprehensive care.

Coding Guidelines

Inclusion Criteria

Use M46.97 When
  • Follow official ICD
  • 10 coding guidelines, ensuring that the diagnosis is supported by clinical documentation
  • Include relevant imaging and laboratory results to substantiate the diagnosis of inflammatory spondylopathy

Exclusion Criteria

Do NOT use M46.97 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

72148CPT Code

MRI of the lumbar spine

Clinical Scenario

When imaging is required to assess for inflammatory changes in the spine.

Documentation Requirements

Document the clinical rationale for the MRI and any prior treatments attempted.

Specialty Considerations

Rheumatologists may require additional lab tests to correlate with imaging findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more granular coding of inflammatory spine conditions, improving the ability to capture the complexity of these diagnoses and their management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more granular coding of inflammatory spine conditions, improving the ability to capture the complexity of these diagnoses and their management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more granular coding of inflammatory spine conditions, improving the ability to capture the complexity of these diagnoses 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 is the difference between M46.97 and M45?

M46.97 is used for unspecified inflammatory spondylopathy, while M45 is specifically for ankylosing spondylitis. Accurate coding depends on the specificity of the diagnosis.