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ICD-10 Guide
ICD-10 CodesQ66.81

Q66.81

Billable

Congenital vertical talus deformity, right foot

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

Code Description

ICD-10 Q66.81 is a billable code used to indicate a diagnosis of congenital vertical talus deformity, right foot.

Key Diagnostic Point:

Congenital vertical talus deformity, also known as 'rocker-bottom foot,' is a rare foot deformity characterized by an abnormal positioning of the talus bone in the ankle joint. This condition results in a rigid, flat foot with the heel elevated and the forefoot pointing downward. The deformity is typically present at birth and can be associated with other congenital anomalies, particularly in the musculoskeletal system. The right foot is specifically affected in this code, which may influence treatment and management strategies. Diagnosis is usually made through clinical examination and imaging studies, such as X-rays, which reveal the characteristic positioning of the bones. Treatment often involves early intervention, including physical therapy, bracing, or surgical correction, depending on the severity of the deformity and the presence of associated conditions. Early diagnosis and management are crucial to improve functional outcomes and prevent complications such as difficulty walking or further musculoskeletal issues.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between congenital and acquired conditions
  • Identifying associated congenital anomalies
  • Understanding the implications of foot positioning on treatment
  • Navigating coding for multiple congenital conditions

Audit Risk Factors

  • Inadequate documentation of associated congenital anomalies
  • Failure to specify laterality (right vs. left foot)
  • Incorrect coding of surgical procedures related to the deformity
  • Misinterpretation of clinical findings in documentation

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Pediatric documentation must include growth patterns, developmental milestones, and any associated congenital conditions.

Common Clinical Scenarios

Common scenarios include newborn assessments revealing foot deformities, referrals for orthopedic evaluation, and follow-up visits post-surgery.

Billing Considerations

Considerations include the age of the patient, the timing of interventions, and the potential for co-occurring congenital conditions.

Genetics

Documentation Requirements

Genetic documentation should include family history, genetic testing results, and any syndromic associations.

Common Clinical Scenarios

Scenarios may involve genetic counseling for families with a history of congenital malformations and discussions about recurrence risks.

Billing Considerations

Considerations include the need for comprehensive genetic evaluations when multiple congenital anomalies are present.

Coding Guidelines

Inclusion Criteria

Use Q66.81 When
  • Follow official coding guidelines for congenital conditions, ensuring accurate documentation of the diagnosis, associated anomalies, and treatment plans
  • Use additional codes as necessary to capture the full clinical picture

Exclusion Criteria

Do NOT use Q66.81 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

28485CPT Code

Osteotomy, talus

Clinical Scenario

Used in surgical correction of congenital vertical talus.

Documentation Requirements

Document the indication for surgery and pre-operative assessments.

Specialty Considerations

Orthopedic specialists should ensure comprehensive documentation of the surgical approach and outcomes.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the ability to capture the complexity of cases like congenital vertical talus deformity.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the ability to capture the complexity of cases like congenital vertical talus deformity.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    American Academy of Pediatrics - Coding for Pediatric Care

Coding & Billing References

  • •
    American Academy of Pediatrics - Coding for Pediatric Care

Frequently Asked Questions

What is the importance of documenting associated congenital anomalies?

Documenting associated congenital anomalies is crucial for accurate coding, as it impacts treatment decisions, potential surgical interventions, and the overall management of the patient. It also helps in understanding the patient's prognosis and the need for multidisciplinary care.