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ICD-10 Guide
ICD-10 CodesQ31.5

Q31.5

Billable

Congenital laryngomalacia

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

Code Description

ICD-10 Q31.5 is a billable code used to indicate a diagnosis of congenital laryngomalacia.

Key Diagnostic Point:

Congenital laryngomalacia is the most common cause of stridor in infants, characterized by the softening of the tissues of the larynx (voice box) that leads to airway obstruction. This condition typically presents in the first few weeks of life and is often associated with other congenital malformations of the respiratory system, such as choanal atresia, tracheoesophageal fistula, and lung hypoplasia. The stridor is usually inspiratory and may worsen when the infant is agitated or in a supine position. Most cases are mild and resolve spontaneously by 12 to 18 months of age, but severe cases may require surgical intervention, such as supraglottoplasty. Diagnosis is primarily clinical, supported by laryngoscopy to visualize the laryngeal structure. It is essential for coders to understand the implications of associated congenital conditions, as they may influence treatment and management strategies.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and severity of laryngomalacia
  • Potential for associated congenital anomalies
  • Need for precise documentation of symptoms and interventions
  • Differentiation from other causes of stridor

Audit Risk Factors

  • Inadequate documentation of associated congenital conditions
  • Failure to specify the severity of laryngomalacia
  • Misclassification of stridor causes
  • Lack of clarity in treatment plans

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Detailed clinical notes on the infant's respiratory status, feeding difficulties, and growth patterns.

Common Clinical Scenarios

Infants presenting with stridor, especially those with a history of prematurity or other congenital anomalies.

Billing Considerations

Consideration of the infant's age and developmental milestones when assessing severity.

Genetics

Documentation Requirements

Genetic evaluation reports, family history of congenital conditions, and any chromosomal analysis results.

Common Clinical Scenarios

Cases where laryngomalacia is part of a syndrome or associated with chromosomal abnormalities.

Billing Considerations

Understanding the genetic implications of associated congenital anomalies.

Coding Guidelines

Inclusion Criteria

Use Q31.5 When
  • Follow the official ICD
  • CM guidelines for coding congenital malformations, ensuring accurate documentation of associated conditions and severity
  • Use additional codes for any related respiratory conditions

Exclusion Criteria

Do NOT use Q31.5 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

31540CPT Code

Laryngoscopy, flexible, diagnostic

Clinical Scenario

Used to evaluate stridor in infants suspected of having laryngomalacia.

Documentation Requirements

Document findings from the laryngoscopy and any interventions performed.

Specialty Considerations

Pediatric specialists should ensure thorough documentation of airway assessment.

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 ability to capture the complexity of cases like laryngomalacia and its associated anomalies.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the ability to capture the complexity of cases like laryngomalacia and its associated anomalies.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the ability to capture the complexity of cases like laryngomalacia and its associated anomalies.

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 primary cause of congenital laryngomalacia?

Congenital laryngomalacia is primarily caused by the abnormal development of the laryngeal structures, leading to softening and collapse during inspiration. It is often idiopathic but can be associated with other congenital anomalies.