K28
⚠ Non-billable
Gastrojejunal ulcer
ICD-10-CM · FY2026 · Diseases of the Digestive System
Code
K28
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Digestive System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
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 — never code together
- primary ulcer of small intestine (K63.3)
Use additional code
- code to identify:
- alcohol abuse and dependence (F10.-)
Frequently asked questions
What is ICD-10 code K28?
ICD-10-CM code K28 represents Gastrojejunal ulcer. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Digestive System chapter, effective October 1, 2025 – September 30, 2026.
Is K28 billable?
No. K28 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is K28 in?
K28 belongs to the Diseases of the Digestive System chapter (K00–K95) of ICD-10-CM.
Related codes in the K28 category
K28.0
Acute gastrojejunal ulcer with hemorrhage
Billable
K28.1
Acute gastrojejunal ulcer with perforation
Billable
K28.2
Acute gastrojejunal ulcer with both hemorrhage and perforation
Billable
K28.3
Acute gastrojejunal ulcer without hemorrhage or perforation
Billable
K28.4
Chronic or unspecified gastrojejunal ulcer with hemorrhage
Billable
K28.5
Chronic or unspecified gastrojejunal ulcer with perforation
Billable
K28.6
Chronic or unspecified gastrojejunal ulcer with both hemorrhage and perforation
Billable
K28.7
Chronic gastrojejunal ulcer without hemorrhage or perforation
Billable
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