ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesQ71.50

Q71.50

Billable

Longitudinal reduction defect of unspecified ulna

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

Code Description

ICD-10 Q71.50 is a billable code used to indicate a diagnosis of longitudinal reduction defect of unspecified ulna.

Key Diagnostic Point:

The longitudinal reduction defect of the ulna is a congenital malformation characterized by the underdevelopment or absence of the ulna bone, which is one of the two long bones in the forearm. This condition can lead to significant functional impairment, affecting the range of motion and strength of the affected limb. Patients may present with a variety of symptoms, including deformities of the wrist and hand, difficulty in grasping, and potential associated conditions such as radial club hand. The severity of the defect can vary widely, from minor shortening to complete absence of the ulna. Diagnosis is typically made through physical examination and imaging studies, such as X-rays, which can reveal the extent of the defect. Management may involve orthopedic interventions, including surgery, to improve function and appearance. Early diagnosis and intervention are crucial for optimizing outcomes and facilitating normal development in affected children.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and severity of the defect
  • Need for detailed documentation of associated conditions
  • Potential for co-occurring congenital anomalies
  • Variations in treatment approaches and outcomes

Audit Risk Factors

  • Inadequate documentation of the defect's severity
  • Failure to document associated congenital anomalies
  • Misclassification of the defect type
  • Lack of clarity in treatment plans and outcomes

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Pediatric documentation must include growth and developmental assessments, detailed physical examination findings, and any associated conditions.

Common Clinical Scenarios

Common scenarios include referrals for orthopedic evaluation, management of associated limb deformities, and follow-up care for surgical interventions.

Billing Considerations

Considerations include the child's age, developmental milestones, and the impact of the defect on daily activities.

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, evaluation for syndromic conditions, and discussions about recurrence risks.

Billing Considerations

Considerations include the potential for chromosomal abnormalities and the need for comprehensive genetic evaluation.

Coding Guidelines

Inclusion Criteria

Use Q71.50 When
  • 10 guidelines for congenital conditions emphasize the need for specificity in coding, including the identification of associated anomalies and the impact on function
  • Documentation must support the diagnosis and any interventions performed

Exclusion Criteria

Do NOT use Q71.50 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

25400CPT Code

Repair of congenital deformity of the forearm

Clinical Scenario

Used in cases where surgical intervention is required for ulna defects.

Documentation Requirements

Detailed operative notes and pre-operative assessments.

Specialty Considerations

Orthopedic specialists should provide comprehensive documentation of the defect and surgical approach.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding congenital conditions, enabling better tracking of outcomes and resource allocation for affected patients.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding congenital conditions, enabling better tracking of outcomes and resource allocation for affected patients.

Reimbursement & Billing Impact

reimbursement and compliance with coding standards.

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 Q71.50 accurately?

Accurate coding of Q71.50 is crucial for ensuring appropriate treatment planning, resource allocation, and tracking of congenital conditions. It also aids in research and understanding the prevalence and outcomes of limb reduction defects.