K28.4 Chronic or unspecified gastrojejunal ulcer with hemorrhage

ICD-10-CM K28.4: Chronic or unspecified gastrojejunal ulcer with hemorrhage

ICD-10-CM code K28.4 identifies a chronic or unspecified gastrojejunal ulcer accompanied by hemorrhage. It is an active diagnosis concept within the ICD-10-CM system, classified under the parent category for gastrojejunal ulcers. This code represents a specific disease or syndrome diagnosis. 1 3

Plain-language overview

Code K28.4 describes a diagnosis involving a gastrojejunal ulcer that is either chronic or unspecified, and this specific condition is actively accompanied by hemorrhage. 1

What this code represents

The concept K28.4 represents a disease or syndrome, and it is an active terminology record that holds narrower concepts within the ICD-10-CM classification system. 1

Coding details

Within the ICD-10-CM hierarchy, K28.4 is a specific terminology concept that falls directly under the parent concept K28, which designates a gastrojejunal ulcer. 1

Documentation considerations

Clinical literature indicates that a history of gastrointestinal bleeding is an important consideration for patients with ulcers, as a percentage of patients report recurrent bleeding. 2

Clinical context

Peptic ulcer disease is a major cause of morbidity and mortality in the US, and ulcers are reported as the most common cause of hospitalization for upper gastrointestinal bleeding. 2

Aspirin and nonsteroidal anti-inflammatory drugs are known to induce ulcer formation, and aspirin has emerged as a prominent cause of peptic ulcer bleeding in developed countries. 2

Coverage and utilization context

The K28.4 diagnosis appears within a CodeMap diagnostic related group listing alongside other chronic and acute ulcers with hemorrhage or perforation across gastric and duodenal sites. 4

What the sources add

While terminology records define K28.4 as an active disease concept, clinical literature provides operational context by establishing gastrointestinal ulcers as a leading cause of hospitalization for bleeding. 1 2

A comparison of sources shows terminology records provide the exact code label and hierarchy, whereas mapping tools place the identical diagnosis into broader inpatient grouping structures. 1 4

Sources

1. ICD-10-CM K28.4 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Gastrointestinal ulcers, role of aspirin, and clinical outcomes: pathobiology, diagnosis, and treatment — pmc.ncbi.nlm.nih.gov; accessed 2026-07-27.
3. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
4. CodeMap® DRG — codemap.com; accessed 2026-07-27.