When are EM codes used?

Answer 1

Evaluation and Management codes (Example 99213- Established patient visit) when you go to a doctor either you are a new patient or one that has been seen before, these codes are used to explain you saw a doctor on that day or during your say.

Karen- Medical Insuranc Billing and Coding

E/M stands for "evaluation and management". E/M coding is the process by which physician-patient encounters are translated into five digit CPT codes to facilitate billing. CPT stands for "current procedural terminology." These are the numeric codes which are submitted to insurers for payment. Every billable procedure has its own individual CPT code.