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ICD-10 Guide
ICD-10 CodesM48.15

M48.15

Billable

Ankylosing hyperostosis [Forestier], thoracolumbar region

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

Code Description

ICD-10 M48.15 is a billable code used to indicate a diagnosis of ankylosing hyperostosis [forestier], thoracolumbar region.

Key Diagnostic Point:

Ankylosing hyperostosis, also known as Forestier's disease, is characterized by calcification and ossification of the anterior longitudinal ligament of the spine, leading to stiffness and reduced mobility. This condition primarily affects the thoracolumbar region, where the thoracic spine meets the lumbar spine. Patients often present with back pain and stiffness, particularly after periods of inactivity. The condition is more prevalent in older adults and may be associated with other inflammatory spine conditions, such as ankylosing spondylitis. Diagnosis typically involves imaging studies, including X-rays or MRI, which reveal characteristic changes in the spine. The pathophysiology involves abnormal bone remodeling and inflammation, leading to the formation of bony bridges between vertebrae. Management may include physical therapy, pain management, and in severe cases, surgical intervention. Understanding the nuances of this condition is crucial for accurate coding and appropriate treatment planning.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating from other spondylopathies
  • Need for precise documentation of symptoms and imaging findings
  • Potential overlap with ankylosing spondylitis
  • Variability in presentation among patients

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Misdiagnosis due to symptom overlap with other conditions
  • Failure to document imaging results
  • Incorrect linkage of diagnosis to treatment

Specialty Focus

Medical Specialties

Rheumatology

Documentation Requirements

Detailed patient history, physical examination findings, imaging results, and treatment plans.

Common Clinical Scenarios

Patients presenting with chronic back pain, stiffness, and limited mobility.

Billing Considerations

Ensure clear documentation of inflammatory markers and response to treatment.

Orthopedics

Documentation Requirements

Surgical notes, imaging studies, and post-operative assessments.

Common Clinical Scenarios

Patients requiring surgical intervention for severe spinal deformity or pain.

Billing Considerations

Document the extent of spinal involvement and any associated procedures performed.

Coding Guidelines

Inclusion Criteria

Use M48.15 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of the condition's severity and associated symptoms
  • Include imaging results and any relevant laboratory findings

Exclusion Criteria

Do NOT use M48.15 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

72148CPT Code

MRI of the spine

Clinical Scenario

Used to evaluate the extent of hyperostosis in patients with suspected Forestier's disease.

Documentation Requirements

Document the reason for the MRI and findings related to the thoracolumbar region.

Specialty Considerations

Rheumatologists and orthopedists should ensure imaging correlates with clinical findings.

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 ankylosing hyperostosis, improving the accuracy of patient records and treatment plans.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like ankylosing hyperostosis, improving the accuracy of patient records and treatment plans.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like ankylosing hyperostosis, improving the accuracy of patient records and treatment plans.

Resources

Clinical References

  • •
    American Academy of Orthopaedic Surgeons
  • •
    American College of Rheumatology

Coding & Billing References

  • •
    American Academy of Orthopaedic Surgeons
  • •
    American College of Rheumatology

Frequently Asked Questions

What is the primary symptom of ankylosing hyperostosis?

The primary symptom is chronic back pain and stiffness, particularly after periods of inactivity.

How is ankylosing hyperostosis diagnosed?

Diagnosis is typically made through clinical evaluation and imaging studies, such as X-rays or MRI, which reveal characteristic changes in the spine.