E/M Weekly Tip: History Component Types
The levels of E/M services are based on four types of history — problem-focused, expanded problem-focused, detailed and comprehensive. Each type of history includes some or all of the following elements:
- Chief complaint (CC)
- History of present illness (HPI)
- Review of systems (ROS)
- Past, family and/or social history (PFSH)
The extent of history of present illness, review of systems and past, family and/or social history that is obtained and documented is dependent upon clinical judgment and the nature of the presenting problem(s).