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ICD-10 Guide
ICD-10 CodesM41.129

M41.129

Billable

Adolescent idiopathic scoliosis, site unspecified

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

Code Description

ICD-10 M41.129 is a billable code used to indicate a diagnosis of adolescent idiopathic scoliosis, site unspecified.

Key Diagnostic Point:

Adolescent idiopathic scoliosis (AIS) is a three-dimensional spinal deformity characterized by lateral curvature of the spine, typically occurring in children and adolescents during their growth spurts. The condition is termed 'idiopathic' because the exact cause remains unknown, although genetic and environmental factors may play a role. The curvature can lead to asymmetry in the shoulders, waist, and hips, and may result in postural changes and discomfort. Diagnosis is primarily based on physical examination and radiographic imaging, which assesses the Cobb angle to determine the severity of the curvature. Treatment options vary depending on the degree of curvature and the patient's age, ranging from observation and bracing to surgical interventions such as spinal fusion. The site of the curvature can vary, but in this code, it is unspecified, indicating that the specific location of the spinal deformity has not been documented. Early detection and management are crucial to prevent progression and associated complications.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in documentation of curvature site
  • Need for precise measurement of Cobb angle
  • Differentiation from other types of scoliosis
  • Potential for co-existing spinal conditions

Audit Risk Factors

  • Inadequate documentation of curvature measurements
  • Failure to specify the site of scoliosis
  • Lack of follow-up documentation on treatment efficacy
  • Misclassification of idiopathic versus non-idiopathic scoliosis

Specialty Focus

Medical Specialties

Orthopedic Surgery

Documentation Requirements

Detailed imaging reports, treatment plans, and follow-up notes.

Common Clinical Scenarios

Surgical intervention for severe curvature, bracing recommendations.

Billing Considerations

Ensure accurate Cobb angle measurements and specify the need for surgical intervention.

Pediatrics

Documentation Requirements

Growth charts, physical examination findings, and family history.

Common Clinical Scenarios

Routine screening for scoliosis in adolescents, monitoring progression.

Billing Considerations

Document any referrals to specialists and the rationale for treatment decisions.

Coding Guidelines

Inclusion Criteria

Use M41.129 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the diagnosis is supported by clinical documentation
  • Include specific details about the curvature and any associated symptoms

Exclusion Criteria

Do NOT use M41.129 When
  • Exclude conditions that are not idiopathic or that have a specified site

Related ICD-10 Codes

Related CPT Codes

22551CPT Code

Spinal fusion, posterior technique

Clinical Scenario

Used for surgical correction of severe idiopathic scoliosis.

Documentation Requirements

Pre-operative assessments, imaging studies, and surgical notes.

Specialty Considerations

Orthopedic surgeons must document the rationale for surgical intervention.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of scoliosis types, improving the accuracy of data collection and treatment tracking. M41.129 provides a clear designation for idiopathic scoliosis without a specified site, facilitating appropriate management and reimbursement.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of scoliosis types, improving the accuracy of data collection and treatment tracking. M41.129 provides a clear designation for idiopathic scoliosis without a specified site, facilitating appropriate management and reimbursement.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    American Academy of Orthopaedic Surgeons (AAOS)

Coding & Billing References

  • •
    American Academy of Orthopaedic Surgeons (AAOS)

Frequently Asked Questions

What is the significance of the Cobb angle in scoliosis?

The Cobb angle is a measurement used to quantify the degree of spinal curvature in scoliosis. It is critical for determining the severity of the condition and guiding treatment decisions.