K26 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Duodenal ulcer.
Includes
Erosion (acute) of duodenum
Duodenum ulcer (peptic)
Postpyloric ulcer (peptic)
Use additional code
Code to identify:
Alcohol abuse and dependence (F10.-)
Type 1 excludes
Peptic ulcer NOS (K27.-)
Codes
K26.0
Acute duodenal ulcer with hemorrhage
K26.1
Acute duodenal ulcer with perforation
K26.2
Acute duodenal ulcer with both hemorrhage and perforation
K26.3
Acute duodenal ulcer without hemorrhage or perforation
K26.4
Chronic or unspecified duodenal ulcer with hemorrhage
K26.5
Chronic or unspecified duodenal ulcer with perforation
K26.6
Chronic or unspecified duodenal ulcer with both hemorrhage and perforation
K26.7
Chronic duodenal ulcer without hemorrhage or perforation
K26.9
Duodenal ulcer, unspecified as acute or chronic, without hemorrhage or perforation
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