K31.1Billable
Adult hypertrophic pyloric stenosis
- Chapter
- 11. Diseases of the digestive system
- Category
- K31
- Effective date
- October 1, 2026
Related codes in category K31
K31Other diseases of stomach and duodenumK31.0Acute dilatation of stomachYesK31.2Hourglass stricture and stenosis of stomachYesK31.3Pylorospasm, not elsewhere classifiedYesK31.4Gastric diverticulumYesK31.5Obstruction of duodenumYesK31.6Fistula of stomach and duodenumYesK31.7Polyp of stomach and duodenumYesK31.8Other specified diseases of stomach and duodenumK31.81Angiodysplasia of stomach and duodenumK31.811Angiodysplasia of stomach and duodenum with bleedingYesK31.819Angiodysplasia of stomach and duodenum without bleedingYes
Frequently asked questions
What is ICD-10 code K31.1?
K31.1 is an ICD-10-CM diagnosis code for Adult hypertrophic pyloric stenosis.
Is K31.1 a billable code?
Yes. K31.1 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is K31.1 in?
K31.1 falls under Chapter 11: Diseases of the digestive system.
When did K31.1 become effective?
K31.1 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to K31.1?
K31.1 belongs to category K31, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.