DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

K28 Gastrojejunal ulcer

  • Header · not billable

K28 is not billable. The category heads 9 billable codes in FY2027: the 9 codes directly below it.

Index → code

  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic) → K28.9
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic)acute → K28.3
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic)chronic → K28.7

Where it sits

  1. Chapter 11 Diseases of the digestive system (K00-K95)
  2. K20-K31 Diseases of esophagus, stomach and duodenum (K20-K31)
  3. K28 Gastrojejunal ulcer
Billable codes
9
Subdivisions
9
CC / MCC codes
1 / 6
HCC V28 codes
4
New FY2027
0
Index entries
12

Codes in K28

  1. K28.0
    Acute gastrojejunal ulcer with hemorrhage
    BillableMCC
  2. K28.1
    Acute gastrojejunal ulcer with perforation
    BillableMCC78
  3. K28.2
    Acute gastrojejunal ulcer with both hemorrhage and perforation
    BillableMCC78
  4. K28.3
    Acute gastrojejunal ulcer without hemorrhage or perforation
    BillableCC
  5. K28.4
    Chronic or unspecified gastrojejunal ulcer with hemorrhage
    BillableMCC
  6. K28.5
    Chronic or unspecified gastrojejunal ulcer with perforation
    BillableMCC78
  7. K28.6
    Chronic or unspecified gastrojejunal ulcer with both hemorrhage and perforation
    BillableMCC78
  8. K28.7
    Chronic gastrojejunal ulcer without hemorrhage or perforation
    Billable
  9. K28.9
    Gastrojejunal ulcer, unspecified as acute or chronic, without hemorrhage or perforation
    Billable

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At 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

  • primary ulcer of small intestine (K63.3) K63.3

Use additional code

  • code to identify:
  • alcohol abuse and dependence (F10.-) F10

Notes that also apply

Block K20-K31 instructions (Excludes2 1): printed on the block page.

Chapter 11 instructions (Excludes2 8): printed on the chapter 11 page.

Index entries

  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic) → K28.9
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic)acute → K28.3
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic)chronic → K28.7
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic)withhemorrhage → K28.4
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic)withperforation → K28.5
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic)acutewithhemorrhage → K28.0
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic)acutewithperforation → K28.1
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic)chronicwithhemorrhage → K28.4
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic)chronicwithperforation → K28.5
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic)withhemorrhageand perforation → K28.6
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic)acutewithhemorrhageand perforation → K28.2
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegastrojejunal (peptic)chronicwithhemorrhageand perforation → K28.6

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy