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ICD-10 Guide
ICD-10 CodesQ66.80

Q66.80

Billable

Congenital vertical talus deformity, unspecified foot

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

Code Description

ICD-10 Q66.80 is a billable code used to indicate a diagnosis of congenital vertical talus deformity, unspecified foot.

Key Diagnostic Point:

Congenital vertical talus deformity, also known as 'rocker-bottom foot,' is a rare foot deformity characterized by a rigid, vertical position of the talus bone in the ankle joint. This condition is often associated with other congenital malformations, particularly in the musculoskeletal system. The foot appears to have a convex shape, resembling a rocker, which can lead to significant functional impairment if not treated early. The deformity can be isolated or part of a syndrome, and it may present with varying degrees of severity. Diagnosis typically involves clinical examination and imaging studies, such as X-rays, to assess the alignment of the bones and joints. Treatment usually requires surgical intervention to correct the deformity and restore normal foot function, often involving tendon lengthening and realignment of the bones. Early intervention is crucial for optimal outcomes, particularly in pediatric patients, as untreated vertical talus can lead to long-term disability and gait abnormalities.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and severity of the deformity
  • Potential association with other congenital anomalies
  • Need for multidisciplinary care involving orthopedic and pediatric specialists
  • Documentation of clinical findings and treatment plans

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Failure to specify laterality when applicable
  • Misclassification of the condition as a non-congenital deformity
  • Lack of evidence for associated congenital anomalies

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Detailed growth and development assessments, family history of congenital conditions, and specific clinical findings related to the foot deformity.

Common Clinical Scenarios

Evaluation of a newborn with suspected foot deformities, follow-up assessments post-surgery, and management of associated conditions.

Billing Considerations

Consideration of developmental milestones and the impact of the deformity on mobility and quality of life.

Genetics

Documentation Requirements

Genetic testing results, family pedigree, and documentation of any syndromic associations.

Common Clinical Scenarios

Genetic counseling for families with a history of congenital malformations, evaluation of syndromic presentations.

Billing Considerations

Awareness of genetic syndromes that may include vertical talus as part of their phenotype.

Coding Guidelines

Inclusion Criteria

Use Q66.80 When
  • Follow the official ICD
  • CM coding guidelines for congenital conditions, ensuring accurate documentation of the diagnosis, associated anomalies, and any surgical interventions performed

Exclusion Criteria

Do NOT use Q66.80 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

Operative report detailing the procedure and indications.

Specialty Considerations

Orthopedic documentation must include pre-operative assessments and post-operative follow-up.

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 accuracy of data collection and reimbursement processes for 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 accuracy of data collection and reimbursement processes for congenital vertical talus deformity.

Reimbursement & Billing Impact

reimbursement processes for congenital vertical talus deformity.

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 congenital vertical talus deformity accurately?

Accurate coding of congenital vertical talus deformity is crucial for appropriate treatment planning, reimbursement, and tracking of congenital conditions. It ensures that patients receive the necessary interventions and that healthcare providers are compensated for their services.