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ICD-10 Guide
ICD-10 CodesM46.00

M46.00

Billable

Spinal enthesopathy, site unspecified

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

Code Description

ICD-10 M46.00 is a billable code used to indicate a diagnosis of spinal enthesopathy, site unspecified.

Key Diagnostic Point:

Spinal enthesopathy refers to a condition characterized by inflammation at the sites where tendons or ligaments attach to bone, particularly in the spine. This condition can manifest as pain and stiffness in the back, often exacerbated by movement. It is commonly associated with various inflammatory spine conditions, including ankylosing spondylitis, which is a type of spondyloarthritis that primarily affects the spine and can lead to fusion of the vertebrae. Spinal enthesopathy may also be linked to spinal stenosis, a narrowing of the spinal canal that can compress nerves and lead to pain, numbness, or weakness. The unspecified site designation indicates that the specific location of the enthesopathy has not been determined, which can complicate diagnosis and treatment. Clinicians must consider the patient's history, physical examination findings, and imaging studies to accurately assess the condition. The management of spinal enthesopathy often involves a multidisciplinary approach, including physical therapy, medication for inflammation, and in some cases, surgical intervention.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and symptoms
  • Need for comprehensive documentation to specify the site of enthesopathy
  • Differentiation from other spinal conditions like ankylosing spondylitis and spinal stenosis
  • Potential overlap with other inflammatory conditions

Audit Risk Factors

  • Insufficient documentation of symptoms and clinical findings
  • Failure to specify the site of enthesopathy
  • Inconsistent coding with treatment provided
  • Lack of follow-up documentation

Specialty Focus

Medical Specialties

Rheumatology

Documentation Requirements

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

Common Clinical Scenarios

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

Billing Considerations

Consideration of comorbid conditions and the need for a multidisciplinary approach.

Orthopedics

Documentation Requirements

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

Common Clinical Scenarios

Patients with severe spinal pain requiring surgical intervention.

Billing Considerations

Documentation of the specific surgical procedure and its relation to the enthesopathy.

Coding Guidelines

Inclusion Criteria

Use M46.00 When
  • According to ICD
  • 10 guidelines, M46
  • 00 should be used when the specific site of spinal enthesopathy is not documented
  • Coders should ensure that the diagnosis is supported by clinical findings and that other related conditions are ruled out

Exclusion Criteria

Do NOT use M46.00 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

20610CPT Code

Arthrocentesis, aspiration and/or injection into a major joint or bursa

Clinical Scenario

Used when a patient with spinal enthesopathy requires injection for pain relief.

Documentation Requirements

Document the indication for the procedure and the specific site of injection.

Specialty Considerations

Rheumatologists may perform this procedure for therapeutic purposes.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of spinal conditions, including enthesopathy. This specificity aids in better tracking of disease prevalence and treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of spinal conditions, including enthesopathy. This specificity aids in better tracking of disease prevalence and treatment outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of spinal conditions, including enthesopathy. This specificity aids in better tracking of disease prevalence and treatment 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 spinal enthesopathy?

Spinal enthesopathy is an inflammatory condition affecting the sites where tendons and ligaments attach to the spine, leading to pain and stiffness.

When should I use M46.00?

Use M46.00 when the specific site of spinal enthesopathy is not documented, but there is evidence of inflammation at the entheses.