MCMedicalCodingSoftware
Q40.1

Q40.1: Congenital hiatus hernia

Billable / specific codeICD-10-CMPOA exempt

Q40.1 is a billable, specific ICD-10-CM code for congenital hiatus hernia. It is valid for submission on a claim.

Check Q40.1 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • congenital diaphragmatic hernia (Q79.0)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Congenital displacement of cardia through esophageal hiatus

Other codes that can never be billed with Q40.1

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

  • K44Diaphragmatic hernia
  • Q79.0Congenital diaphragmatic hernia

Risk adjustment

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

Medicare coverage

Q40.1 is named in 4 Medicare coverage policies: 4 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56389Billing and Coding: Upper Gastrointestinal Endoscopy and Visualization
  • A56781Billing and Coding: Transthoracic Echocardiography (TTE)
  • A57063Billing and Coding: Diagnostic and Therapeutic Esophagogastroduodenoscopy
  • A57306Billing and Coding: Transthoracic Echocardiography (TTE)

Alphabetic index entries that lead here

  • Displacement, displaced›cardia through esophageal hiatus(congenital)
  • Hernia, hernial›hiatal›congenital
  • Hernia, hernial›paraesophageal›congenital

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under Q40

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.