Patient presents with melena, characterized by black, tarry stools.  The patient reports passing dark, foul-smelling bowel movements, indicative of upper gastrointestinal bleeding.  Onset of melena symptoms is described as [Onset - e.g., gradual, sudden, intermittent].  Associated symptoms include [List associated symptoms e.g., abdominal pain, nausea, vomiting, dizziness, fatigue, weakness, shortness of breath, lightheadedness, syncope, hematemesis].  Review of systems reveals [Relevant findings, e.g., history of peptic ulcer disease, NSAID use, alcohol consumption, liver disease, anticoagulant therapy, recent endoscopic procedures].  Physical examination reveals [Findings e.g., vital signs including blood pressure, heart rate, pallor, abdominal tenderness, orthostatic hypotension].  Differential diagnosis includes peptic ulcer, esophageal varices, gastritis, Mallory-Weiss tear, and other causes of upper GI bleeding.  Diagnostic workup may include complete blood count (CBC), comprehensive metabolic panel (CMP), coagulation studies (PT/INR, PTT), fecal occult blood test, esophagogastroduodenoscopy (EGD), and potentially further imaging studies like abdominal CT scan if clinically indicated.  Treatment plan includes hemodynamic stabilization with intravenous fluids, blood transfusion if necessary, proton pump inhibitors (PPIs) for suspected peptic ulcer, and endoscopic intervention for active bleeding as appropriate. Patient education provided on melena causes, dietary modifications, medication management, and follow-up care.  Follow-up scheduled in [ timeframe ] to monitor symptoms and evaluate treatment efficacy.  ICD-10 code K92.1 (Melena) is documented.