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ICD-10 Guide
ICD-10 CodesQ71.40

Q71.40

Billable

Longitudinal reduction defect of unspecified radius

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

Code Description

ICD-10 Q71.40 is a billable code used to indicate a diagnosis of longitudinal reduction defect of unspecified radius.

Key Diagnostic Point:

Longitudinal reduction defect of the radius is a congenital malformation characterized by the underdevelopment or absence of a portion of the radius bone, which is one of the two long bones in the forearm. This condition can lead to functional impairments, including limited range of motion, weakness, and potential deformities in the wrist and hand. The severity of the defect can vary significantly, ranging from a minor reduction in length to a complete absence of the radius. Associated conditions may include other limb reduction defects, clubfoot, or scoliosis, as these can occur in syndromic presentations. Diagnosis typically involves clinical examination and imaging studies, such as X-rays, to assess the extent of the defect and any associated anomalies. Management may require a multidisciplinary approach, including orthopedic intervention, physical therapy, and possibly surgical correction to improve function and appearance. Early intervention is crucial for optimizing developmental outcomes in affected children.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and severity of the defect
  • Potential for associated congenital anomalies
  • Need for detailed clinical documentation to support coding
  • Differentiation from other limb reduction defects

Audit Risk Factors

  • Inadequate documentation of the defect's severity
  • Failure to report associated congenital anomalies
  • Incorrect linkage of diagnosis to procedures
  • Misclassification of the defect type

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Documentation should include detailed descriptions of the physical examination findings, imaging results, and any functional limitations observed in the child.

Common Clinical Scenarios

A pediatric patient presents with a shortened forearm and limited wrist mobility, requiring assessment for potential surgical intervention.

Billing Considerations

Consideration of developmental milestones and the impact of the defect on daily activities is essential for accurate coding.

Genetics

Documentation Requirements

Genetic testing results, family history, and any syndromic associations should be documented to support the diagnosis.

Common Clinical Scenarios

A child with a longitudinal reduction defect is evaluated for possible genetic syndromes, requiring a comprehensive genetic assessment.

Billing Considerations

Understanding the genetic basis of congenital malformations can aid in counseling families and determining recurrence risks.

Coding Guidelines

Inclusion Criteria

Use Q71.40 When
  • Follow the official ICD
  • CM guidelines for coding congenital malformations, ensuring that all relevant clinical information is documented to support the diagnosis
  • Use additional codes for associated conditions as necessary

Exclusion Criteria

Do NOT use Q71.40 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

20670CPT Code

Arthrocentesis, aspiration and/or injection into a major joint or bursa

Clinical Scenario

Used in conjunction with the diagnosis for joint-related interventions.

Documentation Requirements

Document the indication for the procedure and any imaging studies performed.

Specialty Considerations

Orthopedic specialists may frequently perform this procedure in the context of congenital limb defects.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of congenital malformations, improving the accuracy of data collection and reimbursement processes. Q71.40 provides a clear designation for longitudinal reduction defects, facilitating better tracking of these conditions.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital malformations, improving the accuracy of data collection and reimbursement processes. Q71.40 provides a clear designation for longitudinal reduction defects, facilitating better tracking of these conditions.

Reimbursement & Billing Impact

reimbursement processes. Q71.40 provides a clear designation for longitudinal reduction defects, facilitating better tracking of these conditions.

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 Q71.40 accurately?

Accurate coding of Q71.40 is crucial for ensuring appropriate treatment and management of patients with longitudinal reduction defects. It helps in tracking the prevalence of these conditions and facilitates research into their causes and treatments.