25-year-old male patient is seen in the emergency department (ED) with the symptom of epigastric pain. The patient reports that
he has had this pain for four weeks. In the ED, the patient vomits, but the pain is not relieved. The patient is admitted, and the following diagnostic tests are performed: complete blood count, urinalysis, and gastrointestinal x-ray series. Testing determines that the patient has acute pancreatitis. The patient is discharged in improved condition. Which ICD-10-CM inpatient facility diagnosis code is reported?