Patient presents with symptoms consistent with pancolitis, a form of ulcerative colitis involving inflammation of the entire colon.  Chief complaints include persistent bloody diarrhea, abdominal pain and cramping, urgency, tenesmus, and fatigue.  The patient reports weight loss of [Number] pounds in the last [Timeframe, e.g., month].  Review of systems reveals potential extraintestinal manifestations such as joint pain and intermittent low-grade fever.  Physical examination reveals abdominal tenderness upon palpation.  Differential diagnosis includes Crohn's disease, infectious colitis, and ischemic colitis.  Laboratory tests including complete blood count (CBC), comprehensive metabolic panel (CMP), erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), and stool studies for infectious pathogens have been ordered.  Colonoscopy with biopsy is scheduled to confirm the diagnosis and assess disease severity.  Initial management includes bowel rest, intravenous hydration, and pharmacotherapy with corticosteroids such as prednisone for induction of remission.  Patient education provided regarding ulcerative colitis, pancolitis, flare-up management, medication side effects, and the importance of follow-up appointments.  Medical coding will utilize ICD-10-CM code K51.4 for ulcerative pancolitis and relevant procedure codes for the colonoscopy and biopsies.  Further treatment planning will depend on the colonoscopy findings and response to initial therapy and may involve immunomodulators or biologic agents.  Dietary modifications and nutritional counseling will be incorporated into the treatment plan.  The patient is advised to monitor for complications such as toxic megacolon and colorectal cancer.