Final answer:
The correct code to use for an Established patient when doing an "Office or other outpatient visit for evaluation and management, may not require the presence of a physician; Presenting problem: minimal or minor: avg. time: 5 minutes" is C) 99213.
Step-by-step explanation:
The correct code to use for an Established patient when doing an "Office or other outpatient visit for evaluation and management, may not require the presence of a physician; Presenting problem: minimal or minor: avg. time: 5 minutes" would be C) 99213. This code represents a level 3 outpatient visit, which is appropriate for a minimal or minor presenting problem and an average time of 5 minutes.