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v1.0.0
ICD-10 Guide
ICD-10 CodesM21.129

M21.129

Billable

Varus deformity, not elsewhere classified, unspecified elbow

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

Code Description

ICD-10 M21.129 is a billable code used to indicate a diagnosis of varus deformity, not elsewhere classified, unspecified elbow.

Key Diagnostic Point:

Varus deformity of the elbow is characterized by an inward angulation of the forearm relative to the humerus, leading to a misalignment that can affect the function and aesthetics of the arm. This condition can be acquired due to various factors, including trauma, arthritis, or developmental issues. Patients may present with limited range of motion, pain, and functional impairment. The deformity can also lead to secondary complications such as joint degeneration or instability. Treatment options may include physical therapy, bracing, or surgical intervention, depending on the severity and underlying cause of the deformity. Corrective procedures may involve osteotomy or arthroplasty to realign the joint and restore function. Accurate coding is essential for proper reimbursement and to reflect the complexity of the condition, especially when associated with other deformities or complications.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying causes leading to the deformity
  • Potential for co-existing conditions affecting the elbow
  • Need for detailed documentation of clinical findings
  • Variability in treatment approaches and outcomes

Audit Risk Factors

  • Inadequate documentation of the deformity's severity
  • Failure to specify the acquired nature of the deformity
  • Lack of clarity on associated conditions or complications
  • Improper linkage between diagnosis and treatment codes

Specialty Focus

Medical Specialties

Orthopedic Surgery

Documentation Requirements

Detailed clinical notes including physical examination findings, imaging results, and treatment plans.

Common Clinical Scenarios

Patients presenting with elbow pain and deformity post-trauma or due to degenerative changes.

Billing Considerations

Ensure to document the functional impact of the deformity and any prior treatments attempted.

Physical Medicine and Rehabilitation

Documentation Requirements

Comprehensive assessment of functional limitations and rehabilitation goals.

Common Clinical Scenarios

Patients requiring rehabilitation post-surgery or those with chronic pain due to varus deformity.

Billing Considerations

Focus on documenting the patient's progress and response to therapy.

Coding Guidelines

Inclusion Criteria

Use M21.129 When
  • Follow official ICD
  • CM guidelines for coding acquired deformities
  • Ensure to document the specific nature of the varus deformity and any associated conditions
  • Use additional codes to capture complications or co
  • existing conditions

Exclusion Criteria

Do NOT use M21.129 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

24357CPT Code

Osteotomy, elbow

Clinical Scenario

Used for correction of varus deformity in severe cases.

Documentation Requirements

Operative report detailing the procedure and indication.

Specialty Considerations

Orthopedic surgeons should ensure comprehensive pre-operative and post-operative documentation.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of varus deformities, improving the ability to capture the complexity of these conditions and their treatment needs.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of varus deformities, improving the ability to capture the complexity of these conditions and their treatment needs.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of varus deformities, improving the ability to capture the complexity of these conditions and their treatment needs.

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 varus deformity in the elbow?

Varus deformity in the elbow can be caused by trauma, degenerative joint diseases, or inflammatory conditions such as arthritis.