Patient presents with complaints suggestive of portal gastropathy, potentially related to underlying portal hypertension.  Symptoms include intermittent upper abdominal discomfort, nausea, anorexia, and occasional hematemesis or melena.  Physical examination may reveal splenomegaly or other signs of chronic liver disease.  Endoscopic evaluation demonstrates characteristic findings of portal hypertensive gastropathy, including a mosaic-like mucosal pattern with dilated and tortuous submucosal veins in the gastric antrum and fundus.  Histological examination confirms the diagnosis, revealing vascular congestion and ectasia in the lamina propria.  Differential diagnoses considered include gastric antral vascular ectasia, radiation gastropathy, and inflammatory gastritis.  Laboratory findings may demonstrate thrombocytopenia, elevated liver enzymes, and abnormal coagulation studies consistent with the underlying liver disease.  Diagnosis of portal gastropathy is established based on endoscopic and histological findings in the context of portal hypertension.  Treatment is directed at managing the underlying cause of portal hypertension and may include beta-blockers, endoscopic band ligation for esophageal varices, and management of complications such as bleeding.  Patient education regarding dietary modifications and avoidance of nonsteroidal anti-inflammatory drugs is provided.  Follow-up endoscopy is recommended to monitor disease progression and assess treatment response.  ICD-10 code K75.4, portal hypertensive gastropathy, is assigned.  CPT codes for the diagnostic endoscopy and any therapeutic interventions, such as 43239 for upper gastrointestinal endoscopy with biopsy, are documented.  The patient is scheduled for follow-up with gastroenterology to discuss ongoing management.