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ICD-10 Guide
ICD-10 CodesQ66.52

Q66.52

Billable

Congenital pes planus, left foot

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

Code Description

ICD-10 Q66.52 is a billable code used to indicate a diagnosis of congenital pes planus, left foot.

Key Diagnostic Point:

Congenital pes planus, commonly referred to as flatfoot, is a condition characterized by the absence of the normal arch of the foot. In the case of Q66.52, this condition specifically affects the left foot. It is often identified in infants and young children, where the arch may not have developed properly. The condition can be asymptomatic or may lead to discomfort, pain, and difficulty in walking as the child grows. The etiology of congenital pes planus can be multifactorial, including genetic predispositions, environmental factors, and associated musculoskeletal anomalies. Diagnosis typically involves a physical examination and may include imaging studies to rule out other structural abnormalities. Treatment options vary based on severity and symptoms, ranging from observation and physical therapy to orthotic devices or surgical intervention in more severe cases. Early identification and management are crucial to prevent complications and ensure proper development of the foot and overall mobility.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and severity of the condition
  • Potential for associated musculoskeletal anomalies
  • Need for comprehensive documentation to support diagnosis
  • Differentiation from acquired flatfoot conditions

Audit Risk Factors

  • Inadequate documentation of the condition's severity
  • Failure to document associated conditions or anomalies
  • Misclassification of congenital vs. acquired conditions
  • Lack of follow-up documentation for treatment outcomes

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Pediatric documentation should include growth and development assessments, physical examination findings, and any associated musculoskeletal issues.

Common Clinical Scenarios

Common scenarios include routine pediatric check-ups where flatfoot is identified, or referrals for orthopedic evaluation due to complaints of foot pain.

Billing Considerations

Consideration must be given to the child's age and developmental stage, as well as any family history of foot deformities.

Genetics

Documentation Requirements

Genetic documentation may include family history of congenital conditions, genetic testing results, and any syndromic associations.

Common Clinical Scenarios

Scenarios may involve genetic counseling for families with a history of congenital malformations or when pes planus is part of a broader syndrome.

Billing Considerations

Genetic factors should be considered, especially if there is a pattern of congenital anomalies in the family.

Coding Guidelines

Inclusion Criteria

Use Q66.52 When
  • According to ICD
  • 10 coding guidelines, congenital conditions should be documented with specificity regarding the affected body part and any associated anomalies
  • Proper coding requires a thorough understanding of the patient's clinical history and current presentation

Exclusion Criteria

Do NOT use Q66.52 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

29580CPT Code

Orthotic management of foot deformities

Clinical Scenario

Used when orthotic devices are prescribed for congenital pes planus.

Documentation Requirements

Documentation must include the clinical rationale for orthotic intervention.

Specialty Considerations

Orthopedic specialists should provide detailed notes on the patient's condition and treatment plan.

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, including laterality and associated anomalies, improving the accuracy of data collection and reimbursement.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital conditions, including laterality and associated anomalies, improving the accuracy of data collection and reimbursement.

Reimbursement & Billing Impact

reimbursement.

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 difference between congenital pes planus and acquired flatfoot?

Congenital pes planus is present at birth and is due to developmental factors, while acquired flatfoot develops later in life due to injury, degeneration, or other conditions. Accurate coding requires distinguishing between the two based on clinical documentation.