Coding and coverage · ICD-10-CM

K28 Gastrojejunal ulcer

Not billable (header)Chapter 11

Report one of the more specific codes below.

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Codes under this one

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

Instructional notes

Chapter 11

Excludes2Not included here: the patient may have both; report both when both are present.
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Section K20-K31

Excludes2Not included here: the patient may have both; report both when both are present.

This code

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
  • primary ulcer of small intestine (K63.3)
Use additional codeAdd a second code for the full picture.
  • code to identify:
  • alcohol abuse and dependence (F10.-)
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

Chapter 11: Diseases of the digestive system · K20-K31 Diseases of esophagus, stomach and duodenum (K20-K31)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.