If you’ve ever had to ask a long list of symptom-related questions during a patient visit, you’ve likely done a review of systems, even if it wasn’t labeled that way. A review of systems (ROS) is a structured way to check for symptoms across different parts of the body. It helps uncover problems the patient may not mention on their own and supports accurate documentation and billing. In this article, we’ll break down what a review of systems is, how to document it properly, and provid...