Q31: Congenital malformations of larynx
Codes under Q31 (Congenital malformations of larynx). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| Q31.0 | Web of larynx | ✓ |
| Q31.0 | Web of larynx | ✓ |
| Q31.1 | Congenital subglottic stenosis | ✓ |
| Q31.1 | Congenital subglottic stenosis | ✓ |
| Q31.2 | Laryngeal hypoplasia | ✓ |
| Q31.2 | Laryngeal hypoplasia | ✓ |
| Q31.3 | Laryngocele | ✓ |
| Q31.3 | Laryngocele | ✓ |
| Q31.5 | Congenital laryngomalacia | ✓ |
| Q31.5 | Congenital laryngomalacia | ✓ |
| Q31.8 | Other congenital malformations of larynx | ✓ |
| Q31.8 | Other congenital malformations of larynx | ✓ |
| Q31.9 | Congenital malformation of larynx, unspecified | ✓ |
| Q31.9 | Congenital malformation of larynx, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code Q31?
Q31 is an ICD-10-CM category covering Congenital malformations of larynx. It contains 14 more specific diagnosis codes, 14 of which are billable.
Is Q31 a billable code?
No — Q31 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example Q31.0 — Web of larynx). 14 of the 14 codes under Q31 are billable.
What codes fall under Q31?
Q31 includes Q31.0, Q31.0, Q31.1, Q31.1, Q31.2, plus 9 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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