K31 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Other diseases of stomach and duodenum.
Includes
Functional disorders of stomach
Type 2 excludes
Codes
K31.0
Acute dilatation of stomach
K31.1
Adult hypertrophic pyloric stenosis
K31.2
Hourglass stricture and stenosis of stomach
K31.3
Pylorospasm, not elsewhere classified
K31.4
Gastric diverticulum
K31.5
Obstruction of duodenum
K31.6
Fistula of stomach and duodenum
K31.7
Polyp of stomach and duodenum
K31.8
Other specified diseases of stomach and duodenum
K31.9
Disease of stomach and duodenum, unspecified
K31.A
Gastric intestinal metaplasia
Versions
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code