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v1.0.0
ICD-10 Guide
ICD-10 CodesQ71.4

Q71.4

Billable

Longitudinal reduction defect of radius

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

Code Description

ICD-10 Q71.4 is a billable code used to indicate a diagnosis of longitudinal reduction defect of radius.

Key Diagnostic Point:

Longitudinal reduction defect of the radius is a congenital malformation characterized by the underdevelopment or absence of the radius bone in the forearm. This condition can lead to significant functional impairment, affecting the range of motion and strength of the affected limb. It may present as a unilateral or bilateral condition and is often associated with other congenital anomalies, such as those affecting the ulna or hand. Clinically, patients may exhibit a shortened forearm, radial deviation of the wrist, and functional limitations in grasping and manipulation. Diagnosis typically involves physical examination and imaging studies, such as X-rays, to assess the extent of the defect and any associated skeletal abnormalities. Management may include orthopedic interventions, such as corrective surgery or the use of prosthetics, to improve function and appearance. Early intervention is crucial for optimizing outcomes and enhancing the quality of life for affected individuals.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation (unilateral vs. bilateral)
  • Potential association with other congenital anomalies
  • Need for detailed documentation of functional impairment
  • Variations in treatment approaches

Audit Risk Factors

  • Inadequate documentation of associated conditions
  • Failure to specify laterality (unilateral vs. bilateral)
  • Lack of detailed functional assessment
  • Inconsistent coding of surgical interventions

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Documentation should include detailed physical examination findings, imaging results, and any functional assessments performed. Growth and developmental milestones should also be noted.

Common Clinical Scenarios

A pediatric patient presents with a shortened forearm and limited wrist mobility; imaging reveals a longitudinal reduction defect of the radius.

Billing Considerations

Coders should ensure that all associated conditions are documented and coded appropriately to reflect the full clinical picture.

Genetics

Documentation Requirements

Genetic testing results, family history of congenital conditions, and any syndromic associations should be documented.

Common Clinical Scenarios

A child with a longitudinal reduction defect of the radius undergoes genetic counseling due to a family history of limb malformations.

Billing Considerations

Coders must be aware of the potential for syndromic associations and ensure that genetic documentation supports the diagnosis.

Coding Guidelines

Inclusion Criteria

Use Q71.4 When
  • Follow the official ICD
  • CM coding guidelines for congenital malformations, ensuring accurate documentation of the condition's nature, laterality, and any associated anomalies

Exclusion Criteria

Do NOT use Q71.4 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

25400CPT Code

Repair of radius fracture

Clinical Scenario

Used in cases where surgical intervention is required for functional improvement.

Documentation Requirements

Document the nature of the defect and the surgical approach taken.

Specialty Considerations

Orthopedic specialists should provide detailed operative notes.

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 granularity of data collection and enhancing the ability to track outcomes and resource utilization in congenital care.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the granularity of data collection and enhancing the ability to track outcomes and resource utilization in congenital care.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the granularity of data collection and enhancing the ability to track outcomes and resource utilization in congenital care.

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 a longitudinal reduction defect and a complete absence of the radius?

A longitudinal reduction defect refers to a partial underdevelopment of the radius, while a complete absence indicates that the radius is entirely missing. Accurate coding is essential to reflect the specific nature of the condition.