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Q40

Q40: Other congenital malformations of upper alimentary tract

Non-billable headerICD-10-CM

Q40 is a non-billable header ICD-10-CM code for other congenital malformations of upper alimentary tract. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with Q40

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • K31.1Adult hypertrophic pyloric stenosis
  • K31.2Hourglass stricture and stenosis of stomach
  • K31.3Pylorospasm, not elsewhere classified
  • K31.4Gastric diverticulum
  • K44Diaphragmatic hernia
  • Q79.0Congenital diaphragmatic hernia
  • K31.BHypertrophic pyloric stenosis, in childhood

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead Q40

6 child codes. Green means billable.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.