What is the medical billing code 99284 for exactly?

The medical billing code 99284 is for an established patient office or other outpatient visit that typically requires a medically appropriate history and/or examination and decision-making of moderate complexity. Using problem-focused interval history; 10 minutes.

This code is typically used for follow-up visits for chronic conditions, such as diabetes or high blood pressure. It may also be used for visits for new problems that are not considered to be complex.