Reader Questions: Count Systems, Not Symptoms, On ROS Levels

Article Overview

This article addresses a reader question about review-of-systems documentation in an emergency department scenario and the general approach to symptom-based diagnosis coding when no definitive diagnosis is documented. It is aimed at coders, billers, and clinical documentation staff who need to understand how encounter documentation is evaluated for E/M history elements and how broad symptom reporting is reflected in diagnosis selection. The discussion includes ROS level concepts, emergency department E/M context, and the use of ICD diagnosis codes for presenting symptoms.