Question: Based on the latest evidence-based practice guidelines, what symptoms suggest that a patient may be experiencing IBS? What are the diagnostic tools used to diagnose IBS? What is the pathophysiology of IBS and what are treatment options for it? How would you determine differential diagnoses? Provide rationale. Which ICD-10 codes would you use to code this visit? Explain why. Outline a detailed collaboration and follow-up plan you would use for a patient with IBS, including any referrals and, if needed, the collaboration you would utilize to optimize the patient's care.