Patient presents with symptoms suggestive of pangastritis.  Reported complaints include epigastric pain, indigestion, dyspepsia, nausea, vomiting, and abdominal discomfort.  The patient describes the pain as a burning or gnawing sensation, occasionally radiating to the back.  On physical examination, tenderness to palpation was noted in the epigastric region.  The patient denies any history of hematemesis or melena.  Review of systems reveals decreased appetite, early satiety, and occasional bloating.  Differential diagnoses considered include gastritis, peptic ulcer disease, gastroesophageal reflux disease (GERD), and functional dyspepsia.  Endoscopic evaluation revealed diffuse erythema and inflammation throughout the stomach lining, consistent with a diagnosis of pangastritis.  Biopsies were taken for histopathological analysis to assess the degree of inflammation and rule out Helicobacter pylori infection.  The patient's current medications include over-the-counter antacids, which provide minimal relief.  A treatment plan was initiated, including proton pump inhibitors (PPIs) for acid suppression, dietary modifications to avoid irritating foods, and lifestyle changes to manage stress.  Patient education was provided on the importance of medication adherence and follow-up appointments.  The patient will be scheduled for a follow-up endoscopy to assess the response to therapy and monitor for any complications.  ICD-10 code K29.4 (Gastritis, unspecified) and relevant CPT codes for the endoscopic procedure and biopsies will be documented for billing and coding purposes.  The prognosis for pangastritis is generally favorable with appropriate management.  Continued monitoring and patient compliance with the prescribed treatment plan are essential for optimal outcomes.