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ICD-10 Guide
ICD-10 CodesQ66.221

Q66.221

Billable

Congenital metatarsus adductus, right foot

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 Q66.221 is a billable code used to indicate a diagnosis of congenital metatarsus adductus, right foot.

Key Diagnostic Point:

Congenital metatarsus adductus is a common foot deformity characterized by the inward turning of the forefoot. This condition is typically identified at birth and can be associated with other congenital malformations. The right foot is specifically affected in this code, indicating that the deformity is unilateral. The etiology of metatarsus adductus is often multifactorial, including genetic predispositions and intrauterine positioning. Clinically, the condition may present with a noticeable curve of the foot, which can be assessed through physical examination. Treatment options vary based on severity and may include observation, stretching exercises, or corrective footwear. In some cases, casting or surgical intervention may be necessary. Accurate coding is essential for appropriate management and follow-up care, especially in pediatric populations where early intervention can significantly improve outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation from similar foot deformities (e.g., clubfoot)
  • Need for precise documentation of laterality
  • Potential association with other congenital conditions
  • Variability in treatment approaches and follow-up

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Failure to specify laterality
  • Misclassification with other foot deformities
  • Lack of follow-up documentation

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Pediatric documentation should include detailed physical examination findings, family history, and any associated congenital conditions.

Common Clinical Scenarios

Common scenarios include newborn assessments where metatarsus adductus is identified, and follow-up visits for treatment evaluation.

Billing Considerations

Consideration of developmental milestones and potential impact on mobility is crucial for accurate coding.

Genetics

Documentation Requirements

Documentation should include genetic counseling notes, family history of congenital conditions, and any genetic testing results.

Common Clinical Scenarios

Scenarios may involve referrals for genetic evaluation when metatarsus adductus is part of a syndrome or associated with other congenital anomalies.

Billing Considerations

Understanding the genetic implications and potential syndromic associations is vital for accurate coding.

Coding Guidelines

Inclusion Criteria

Use Q66.221 When
  • Follow official ICD
  • 10 guidelines for coding congenital malformations, ensuring accurate documentation of laterality and associated conditions
  • Use additional codes as necessary to capture any related congenital anomalies

Exclusion Criteria

Do NOT use Q66.221 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

29580CPT Code

Application of a cast for correction of foot deformity

Clinical Scenario

Used in cases where casting is indicated for metatarsus adductus.

Documentation Requirements

Document the reason for casting, duration, and follow-up plans.

Specialty Considerations

Pediatric specialists should ensure that the casting technique is appropriate for the child's age and condition.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding congenital conditions, improving data accuracy and facilitating better patient management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding congenital conditions, improving data accuracy and facilitating better patient management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for greater specificity in coding congenital conditions, improving data accuracy and facilitating better patient management.

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 significance of coding laterality in congenital metatarsus adductus?

Coding laterality is crucial as it affects treatment decisions and follow-up care. Accurate documentation ensures that the specific foot affected is clearly identified, which is essential for appropriate management.