Patient presents with complaints consistent with Irritable Bowel Syndrome (IBS).  Symptoms include chronic abdominal pain, bloating, and altered bowel habits, characterized by a mix of constipation and diarrhea.  The patient reports experiencing discomfort and cramping relieved by bowel movements.  Symptom onset was approximately [duration] ago.  The patient denies any fever, weight loss, rectal bleeding, or family history of inflammatory bowel disease.  Physical examination reveals a soft, non-tender abdomen with normal bowel sounds.  No masses or organomegaly were noted.  The patient's symptoms align with the Rome IV criteria for IBS.  Differential diagnoses considered include inflammatory bowel disease (Crohn's disease, ulcerative colitis), celiac disease, lactose intolerance, and small intestinal bacterial overgrowth (SIBO).  Laboratory tests, including complete blood count (CBC) and comprehensive metabolic panel (CMP), are ordered to rule out other conditions.  Initial management will focus on dietary modifications, including increasing fiber intake and avoiding trigger foods such as caffeine, alcohol, and fatty foods.  Patient education regarding stress management techniques and the importance of regular exercise will be provided.  Pharmacological interventions may be considered if lifestyle modifications are insufficient, including antispasmodics, antidiarrheals, or laxatives depending on the predominant bowel habit.  Follow-up is scheduled in [duration] to assess symptom response to treatment and adjust the management plan as needed.  ICD-10 code K58.0 is assigned for Irritable Bowel Syndrome with mixed bowel habits.  Further investigations may be warranted if symptoms do not improve or worsen.