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v1.0.0
ICD-10 Guide
ICD-10 CodesR62.51

R62.51

Failure to thrive (child)

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

Code Description

ICD-10 R62.51 is a billable code used to indicate a diagnosis of failure to thrive (child).

Key Diagnostic Point:

Failure to thrive (FTT) in children is a clinical syndrome characterized by inadequate growth or the inability to maintain growth, typically defined as a weight below the 5th percentile for age or a significant drop in growth percentiles over time. Symptoms may include poor weight gain, decreased appetite, lethargy, and developmental delays. Signs can manifest as a lack of subcutaneous fat, decreased muscle mass, and signs of malnutrition. Abnormal clinical findings may include laboratory results indicating anemia, electrolyte imbalances, or deficiencies in vitamins and minerals. FTT can arise from a variety of causes, including inadequate caloric intake, malabsorption syndromes, chronic illnesses, or psychosocial factors. A thorough assessment is essential to identify underlying causes and guide appropriate interventions.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying causes (medical, social, environmental)
  • Need for comprehensive documentation of growth parameters
  • Differentiation from other growth disorders
  • Potential for co-morbid conditions

Audit Risk Factors

  • Inadequate documentation of growth measurements
  • Failure to specify underlying causes
  • Misclassification of FTT with other growth disorders
  • Lack of follow-up documentation

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Document growth parameters, dietary intake, and psychosocial factors.

Common Clinical Scenarios

Evaluation of a child presenting with poor weight gain and developmental delays.

Billing Considerations

Consider referral to a pediatric nutritionist for dietary assessment.

Emergency Medicine

Documentation Requirements

Acute assessment of hydration status and immediate nutritional needs.

Common Clinical Scenarios

Child presenting with severe dehydration due to inadequate intake.

Billing Considerations

Document any acute interventions and follow-up plans.

Coding Guidelines

Inclusion Criteria

Use R62.51 When
  • Follow official ICD
  • 10 guidelines for coding FTT, ensuring accurate documentation of growth parameters and any underlying conditions
  • Use additional codes to specify contributing factors

Exclusion Criteria

Do NOT use R62.51 When
No specific exclusions found.

Related CPT Codes

99213CPT Code

Established patient office visit, Level 3

Clinical Scenario

Used for follow-up visits to monitor growth and development.

Documentation Requirements

Document growth measurements, dietary assessments, and any interventions.

Specialty Considerations

Pediatricians should ensure growth charts are updated.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of FTT, enabling better tracking of growth disorders and their underlying causes, which can improve patient care and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of FTT, enabling better tracking of growth disorders and their underlying causes, which can improve patient care and resource allocation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of FTT, enabling better tracking of growth disorders and their underlying causes, which can improve patient care and resource allocation.

Resources

Clinical References

  • •
    CDC Growth Charts

Coding & Billing References

  • •
    CDC Growth Charts

Frequently Asked Questions

What are the primary causes of failure to thrive?

Common causes include inadequate caloric intake, malabsorption syndromes, chronic illnesses, and psychosocial factors. A thorough evaluation is necessary to determine the underlying cause.