ICD-10-CM 2027 diagnosis code
K28Gastrojejunal ulcer
K28 is a header code, so it can't be reported by itself. Choose one of the 9 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About K28
K28 is the ICD-10-CM diagnosis code for gastrojejunal ulcer. It belongs to block K20-K31 (diseases of esophagus, stomach and duodenum) and chapter 11 (diseases of the digestive system). It is a header code, so it can't be reported by itself; one of its 9 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: K28.0 (hemorrhage), K28.1 (perforation), K28.2 (perforation), K28.3 (perforation), K28.4 (hemorrhage), K28.5 (perforation), K28.6 (perforation), K28.7 (perforation) and 1 more.
Don't report K28 together with the conditions in its Excludes1 note: primary ulcer of small intestine (K63.3).
Use an additional code to identify: alcohol abuse and dependence (F10.-).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under K28
- K28.0Acute gastrojejunal ulcer with hemorrhageBillable
- K28.1Acute gastrojejunal ulcer with perforationBillable
- K28.2Acute gastrojejunal ulcer with both hemorrhage and perforationBillable
- K28.3Acute gastrojejunal ulcer without hemorrhage or perforationBillable
- K28.4Chronic or unspecified gastrojejunal ulcer with hemorrhageBillable
- K28.5Chronic or unspecified gastrojejunal ulcer with perforationBillable
- K28.6Chronic or unspecified gastrojejunal ulcer with both hemorrhage and perforationBillable
- K28.7Chronic gastrojejunal ulcer without hemorrhage or perforationBillable
- K28.9Gastrojejunal ulcer, unspecified as acute or chronic, without hemorrhage or perforationBillable
Coding notes
- anastomotic ulcer (peptic) or erosion
- gastrocolic ulcer (peptic) or erosion
- gastrointestinal ulcer (peptic) or erosion
- gastrojejunal ulcer (peptic) or erosion
- jejunal ulcer (peptic) or erosion
- marginal ulcer (peptic) or erosion
- stomal ulcer (peptic) or erosion
- primary ulcer of small intestine (K63.3)
- code to identify:
- alcohol abuse and dependence (F10.-)
Notes that apply from higher levels
Instructions written at a parent level also apply to K28.
Broader instructions also apply from K20-K31 Diseases of esophagus, stomach and duodenum and Chapter 11: Diseases of the digestive system.
Codes whose notes reference K28
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about K28
Is K28 billable?
- No. K28 is a header code. Report one of its more specific subcodes instead.