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v1.0.0
ICD-10 Guide
ICD-10 CodesM21.62

M21.62

Billable

Bunionette

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

Code Description

ICD-10 M21.62 is a billable code used to indicate a diagnosis of bunionette.

Key Diagnostic Point:

A bunionette, also known as a tailor's bunion, is an acquired deformity characterized by a bony prominence on the lateral aspect of the fifth metatarsal head. This condition typically arises due to a combination of genetic predisposition and biomechanical factors, such as abnormal foot mechanics or footwear choices that place excessive pressure on the fifth toe. Patients may present with pain, swelling, and redness at the site of the bunionette, which can lead to difficulty in wearing shoes and performing daily activities. The deformity can be exacerbated by conditions such as hallux valgus, where the big toe deviates laterally, causing misalignment in the foot structure. Treatment options range from conservative measures, such as orthotics and padding, to surgical interventions aimed at correcting the deformity and alleviating pain. Surgical procedures may include osteotomy of the fifth metatarsal, excision of the bony prominence, or realignment of the toe. Accurate diagnosis and coding are essential for appropriate management and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and severity of symptoms
  • Differentiation from other toe deformities
  • Need for detailed documentation of conservative vs. surgical treatment
  • Potential for co-existing conditions affecting coding

Audit Risk Factors

  • Inadequate documentation of symptoms and treatment
  • Failure to specify the laterality of the condition
  • Misclassification as a different toe deformity
  • Lack of supporting evidence for surgical procedures

Specialty Focus

Medical Specialties

Podiatry

Documentation Requirements

Detailed clinical notes on the patient's history, physical examination findings, and treatment plan.

Common Clinical Scenarios

Patients presenting with foot pain, difficulty in shoe fitting, or prior conservative treatments.

Billing Considerations

Ensure to document the impact of the bunionette on the patient's daily activities and any previous treatments attempted.

Orthopedics

Documentation Requirements

Comprehensive assessment including imaging studies and surgical notes if applicable.

Common Clinical Scenarios

Patients requiring surgical intervention for bunionette correction or those with associated foot deformities.

Billing Considerations

Document any co-existing conditions that may affect surgical outcomes or recovery.

Coding Guidelines

Inclusion Criteria

Use M21.62 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the condition's laterality and any associated conditions
  • Include details of conservative treatments attempted before surgical intervention

Exclusion Criteria

Do NOT use M21.62 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

28292CPT Code

Osteotomy, fifth metatarsal

Clinical Scenario

Used when surgical correction of a bunionette is performed.

Documentation Requirements

Surgical notes detailing the procedure and any complications.

Specialty Considerations

Podiatrists and orthopedic surgeons should ensure clear documentation of the surgical approach.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of bunionette, improving the accuracy of diagnosis and treatment tracking. It has also facilitated better data collection for research and quality improvement initiatives.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of bunionette, improving the accuracy of diagnosis and treatment tracking. It has also facilitated better data collection for research and quality improvement initiatives.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of bunionette, improving the accuracy of diagnosis and treatment tracking. It has also facilitated better data collection for research and quality improvement initiatives.

Resources

Clinical References

  • •
    American Podiatric Medical Association

Coding & Billing References

  • •
    American Podiatric Medical Association

Frequently Asked Questions

What is the primary cause of a bunionette?

Bunionettes are primarily caused by genetic factors, improper footwear, and abnormal foot mechanics that lead to lateral deviation of the fifth toe.

How is a bunionette diagnosed?

Diagnosis is typically made through a physical examination and patient history, with imaging studies used to assess the severity if necessary.

What are the treatment options for a bunionette?

Treatment options include conservative measures like orthotics and padding, as well as surgical interventions such as osteotomy or excision of the bony prominence.