Which CPT code corresponds to established patient E/M re-exam Level 4 - moderate 30-39 minutes?

• A. 99214
• B. 99212
• C. 99203
• D. 99205

Answer: (A)

Time-based E/M coding for established patients uses the total time spent on the encounter to determine the level of service. When a re-exam takes 30–39 minutes, it falls into Level 4 for an established patient. This reflects a moderate amount of counseling or coordinated care, or a moderate level of medical decision making, documented as a re-evaluation after prior treatment. In this scenario, the correct code is the established patient office visit at Level 4, not a separate re-exam code. Make sure the notes show that this is a re-evaluation due to a change or response in condition, with a detailed exam and an updated plan. The other options would not fit the 30–39 minute window or the established-patient status (they would be lower-level visits or apply to new patients), so they don’t match the described situation.