K28 – Gastrojejunal ulcer
ICD-10-CM 2027 diagnosis code · Diseases of esophagus, stomach and duodenum
ICD-10-CM code
K28
- Code
K28(claims format:K28)- Description
- Gastrojejunal ulcer
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 11. Diseases of the digestive system (K00-K95)
- Block
- K20-K31 Diseases of esophagus, stomach and duodenum
Billable codes under K28
K28 is a header code and cannot be used on claims. Choose the most specific code:
- K28.0 – Acute gastrojejunal ulcer with hemorrhageBillable
- K28.1 – Acute gastrojejunal ulcer with perforationBillable
- K28.2 – Acute gastrojejunal ulcer with both hemorrhage and perforationBillable
- K28.3 – Acute gastrojejunal ulcer without hemorrhage or perforationBillable
- K28.4 – Chronic or unspecified gastrojejunal ulcer with hemorrhageBillable
- K28.5 – Chronic or unspecified gastrojejunal ulcer with perforationBillable
- K28.6 – Chronic or unspecified gastrojejunal ulcer with both hemorrhage and perforationBillable
- K28.7 – Chronic gastrojejunal ulcer without hemorrhage or perforationBillable
- K28.9 – Gastrojejunal ulcer, unspecified as acute or chronic, without hemorrhage or perforationBillable
Notes for K28
Includes:
- 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
Excludes1 (not coded here):
- primary ulcer of small intestine (K63.3)
Use additional code:
- code to identify:
- alcohol abuse and dependence (F10.-)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block K20-K31
Excludes2 (not included here):
- hiatus hernia (K44.-)
Frequently asked questions
What is ICD-10 code K28?
K28 is the ICD-10-CM code for gastrojejunal ulcer, in the block K20-K31 (Diseases of esophagus, stomach and duodenum).
Is K28 a billable code?
No. K28 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.