Q40: Other congenital malformations of upper alimentary tract
Codes under Q40 (Other congenital malformations of upper alimentary tract). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| Q40.0 | Congenital hypertrophic pyloric stenosis | ✓ |
| Q40.0 | Congenital hypertrophic pyloric stenosis | ✓ |
| Q40.1 | Congenital hiatus hernia | ✓ |
| Q40.1 | Congenital hiatus hernia | ✓ |
| Q40.2 | Other specified congenital malformations of stomach | ✓ |
| Q40.2 | Other specified congenital malformations of stomach | ✓ |
| Q40.3 | Congenital malformation of stomach, unspecified | ✓ |
| Q40.3 | Congenital malformation of stomach, unspecified | ✓ |
| Q40.8 | Other specified congenital malformations of upper alimentary tract | ✓ |
| Q40.8 | Other specified congenital malformations of upper alimentary tract | ✓ |
| Q40.9 | Congenital malformation of upper alimentary tract, unspecified | ✓ |
| Q40.9 | Congenital malformation of upper alimentary tract, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code Q40?
Q40 is an ICD-10-CM category covering Other congenital malformations of upper alimentary tract. It contains 12 more specific diagnosis codes, 12 of which are billable.
Is Q40 a billable code?
No — Q40 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 Q40.0 — Congenital hypertrophic pyloric stenosis). 12 of the 12 codes under Q40 are billable.
What codes fall under Q40?
Q40 includes Q40.0, Q40.0, Q40.1, Q40.1, Q40.2, plus 7 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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