K28 — Gastrojejunal ulcer
Is K28 billable?
No — K28 is a non-billable header code. K28 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 9 billable codes beneath K28.
Billable codes under this header
- K28.0Acute gastrojejunal ulcer with hemorrhage
- K28.1Acute gastrojejunal ulcer with perforation
- K28.2Acute gastrojejunal ulcer with both hemorrhage and perforation
- K28.3Acute gastrojejunal ulcer without hemorrhage or perforation
- K28.4Chronic or unspecified gastrojejunal ulcer with hemorrhage
- K28.5Chronic or unspecified gastrojejunal ulcer with perforation
- K28.6Chronic or unspecified gastrojejunal ulcer with both hemorrhage and perforation
- K28.7Chronic gastrojejunal ulcer without hemorrhage or perforation
- K28.9Gastrojejunal ulcer, unspecified as acute or chronic, without hemorrhage or perforation
K28 at a glance
| Code | K28 |
|---|---|
| Description | Gastrojejunal ulcer |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with K28 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- primary ulcer of small intestine (K63.3)
Use additional code
Report an additional code alongside K28 to fully describe the condition. K28 is sequenced first.
- code to identify:
- alcohol abuse and dependence (F10.-)
Includes
Conditions classified to K28.
- 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
Excludes2 — not included here — inherited from Chapter 11
The conditions below are not part of K28, but a patient may have both at the same time. When documentation supports it, K28 and the excluded code may both be reported.
- 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)
Excludes2 — not included here — inherited from K20-K31
The conditions below are not part of K28, but a patient may have both at the same time. When documentation supports it, K28 and the excluded code may both be reported.
- hiatus hernia (K44.-)
What codes fall under K28? (9)
- K28.0Acute gastrojejunal ulcer with hemorrhage
- K28.1Acute gastrojejunal ulcer with perforation
- K28.2Acute gastrojejunal ulcer with both hemorrhage and perforation
- K28.3Acute gastrojejunal ulcer without hemorrhage or perforation
- K28.4Chronic or unspecified gastrojejunal ulcer with hemorrhage
- K28.5Chronic or unspecified gastrojejunal ulcer with perforation
- K28.6Chronic or unspecified gastrojejunal ulcer with both hemorrhage and perforation
- K28.7Chronic gastrojejunal ulcer without hemorrhage or perforation
- K28.9Gastrojejunal ulcer, unspecified as acute or chronic, without hemorrhage or perforation
How long has K28 existed?
K28 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with K28?
ICD-10-CM declares these codes mutually exclusive with K28 — exactly one of each pair can be correct for a given encounter.