In simple words: This code describes a serious condition where a sore (ulcer) in the connection between the stomach and small intestine has a hole in it. This is a sudden and severe problem.

K28.1 in the ICD-10-CM coding system represents acute gastrojejunal ulcer with perforation.This code encompasses peptic ulcers specifically located at the gastrojejunal anastomosis (the connection between the stomach and jejunum), which have perforated (ruptured).The condition is characterized by acute onset and the presence of a hole in the ulcer.It includes anastomotic, gastrocolic, gastrointestinal, gastrojejunal, jejunal, marginal, and stomal ulcers (peptic) or erosions.It excludes primary ulcers of the small intestine (K63.3).

Example 1: A 60-year-old male patient with a history of peptic ulcers presents to the emergency room with severe upper abdominal pain, radiating to the back.Physical examination reveals guarding and rebound tenderness.Laboratory studies show elevated white blood cell count.A CT scan confirms a perforated gastrojejunal ulcer., A 55-year-old female patient, post-gastrectomy, develops severe abdominal pain and hypotension.She is tachycardic and diaphoretic.An upper GI series reveals free air under the diaphragm, indicating a perforated gastrojejunal ulcer., A 70-year-old male patient with a history of alcohol abuse and NSAID use is admitted with symptoms consistent with a perforated peptic ulcer.Endoscopy confirms a perforation at the gastrojejunal anastomosis.Surgical intervention is necessary.

Detailed history including symptoms (onset, duration, character, location, radiation),physical examination findings (vital signs, abdominal examination), imaging studies (X-ray, CT scan), laboratory data (complete blood count, electrolytes), endoscopy report (if performed), and operative report (if surgery is performed).

** This code is for an acute condition.Appropriate follow-up codes should be used for subsequent encounters related to the management of the perforation and any complications.