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Q31

⚠ Non-billable (Header)

Congenital malformations of larynx

Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

direct

Cannot be coded with Q31

  • • congenital laryngeal stridor NOS (P28.89)

Child Codes (7)

Q31.0Web of larynxQ31.1Congenital subglottic stenosisQ31.2Laryngeal hypoplasiaQ31.3LaryngoceleQ31.5Congenital laryngomalaciaQ31.8Other congenital malformations of larynxQ31.9Congenital malformation of larynx, unspecified

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Code Information

CodeQ31
BillableNo — Header code
CategoryCongenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Excludes11 rule(s)
Excludes20 note(s)
Child codes7

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)