K31.9
K31.9: Disease of stomach and duodenum, unspecified
Billable / specific codeICD-10-CM
K31.9 is a billable, specific ICD-10-CM code for disease of stomach and duodenum, unspecified. It is valid for submission on a claim.
Check K31.9 with the rest of the claim: free scrubberRisk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
K31.9 is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A56421Billing and Coding: CT of the Abdomen and Pelvis
- A56724Billing and Coding: Wireless Gastrointestinal Motility Monitoring Systems
Alphabetic index entries that lead here
- Gastropathy
- Disease, diseased›duodenum
- Disease, diseased›stomach
- Disorder›gastric(functional)
- Disturbance›stomach(functional)
- Dysfunction›pylorus
- Lesion›cardia
- Lesion›duodenum
- Lesion›gastric
- Lesion›gastroduodenal
- Lesion›pylorus
- Lesion›stomach
Code history
Unchanged in every release from FY2024 to FY2027.
Other codes under K31
- K31.0Acute dilatation of stomach
- K31.1Adult hypertrophic pyloric stenosis
- K31.BHypertrophic pyloric stenosis, in childhood
- K31.2Hourglass stricture and stenosis of stomach
- K31.3Pylorospasm, not elsewhere classified
- K31.4Gastric diverticulum
- K31.5Obstruction of duodenum
- K31.6Fistula of stomach and duodenum
- K31.7Polyp of stomach and duodenum
- K31.8Other specified diseases of stomach and duodenum
- K31.AGastric intestinal metaplasia