2027 ICD-10-CM Diagnosis Code K28.9Gastrojejunal ulcer, unspecified as acute or chronic, without hemorrhage or perforation
ICD-10-CM Codes›K00–K95›K20-K31›K28
- Billable — Valid for Submission
- Not Chronic
K28.9 is a billable ICD-10-CM diagnosis code for gastrojejunal ulcer, unspecified as acute or chronic, without hemorrhage or perforation. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 380 through 382. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Gastroduodenal ulcer.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Anastomotic ulcer due to Zollinger-Ellison syndrome
- Cancerous ulcer
- Erosion of gastrointestinal anastomosis
- Gastric ulcer without hemorrhage AND without perforation but with obstruction
- Gastrocolic ulcer
- Gastrointestinal anastomotic ulcer due to Crohn disease
- Gastrointestinal ulcer
- Gastrointestinal ulcer due to sepsis
- Gastrojejunal ulcer
- Gastrojejunal ulcer without hemorrhage AND without perforation
- Gastrojejunal ulcer without hemorrhage AND without perforation but with obstruction
- Gastrojejunal ulcer without hemorrhage, without perforation AND without obstruction
- Jejunal ulcer
- Parastomal ulceration
- Peptic ulcer without hemorrhage AND without perforation but with obstruction
- Peristomal skin complication
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to K28.9: its own notes plus those printed at K28, block K20-K31, and Chapter 11. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- 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: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- hiatus hernia (K44.-)
- 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)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name K28.9, its category, or a range that includes it.
Excludes1 4
These codes carry an Excludes1 note naming K28.9: they are not reported together with it, unless the two conditions are unrelated.
- K63.3 Ulcer of intestinegastrointestinal ulcer (K28.-) names K28.-, which includes this code
- K63.3 Ulcer of intestinegastrojejunal ulcer (K28.-) names K28.-, which includes this code
- K63.3 Ulcer of intestinejejunal ulcer (K28.-) names K28.-, which includes this code
- K92.2 Gastrointestinal hemorrhage, unspecified
Excludes2 1
These codes carry an Excludes2 note naming K28.9: its condition is not part of those codes, and both may be reported when the patient has both.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Peptic Ulcer
A peptic ulcer is a sore in the lining of your stomach or your duodenum, the first part of your small intestine. A burning stomach pain is the most common symptom. The pain:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert K28.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About K28.9Overview
Is K28.9 (Gastrojejunal ulcer) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report gastrojejunal ulcer, unspecified as acute or chronic, without hemorrhage or perforation on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does K28.9 group to?
When gastrojejunal ulcer, unspecified as acute or chronic, without hemorrhage or perforation is the principal diagnosis on an inpatient stay, it groups to MS-DRG 381, 380, 382, with relative weights from 0.7283 to 1.9243 depending on complications. Higher weights mean higher Medicare reimbursement.
Can K28.9 be reported with K63.3?
Not as a rule. The Excludes1 note at K28, which applies to K28.9, lists "primary ulcer of small intestine (K63.3)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
Does K28.9 need an additional code?
When the condition applies, yes. The Use Additional Code note at K28, which applies to K28.9, reads: code to identify: alcohol abuse and dependence (F10.-). The additional code is reported after K28.9.
What is the ICD-9 equivalent of K28.9?
Under the General Equivalence Mappings, gastrojejunal ulcer, unspecified as acute or chronic, without hemorrhage or perforation converts to ICD-9-CM 534.90 (gastrojejunal ulcer NOS). The mapping is approximate, so confirm the match fits the documentation.
