Final answer:
The coder must consider place of service, type of service, and patient status for E/M code assignment, which are essential for accurately capturing the service details.
Step-by-step explanation:
The three factors that a coder must consider in E/M code assignment are place of service, type of service, and patient status.
These elements are crucial for accurately capturing the complexity and nature of the service provided. The place of service refers to the setting where the patient receives care, such as an office or hospital.
The type of service defines what kind of care is being provided, such as a consultation or a physical examination. Finally, patient status indicates whether the patient is new or established to the provider, which can affect the level of service complexity and thus the coding.