An established patient visit is a medical appointment with a doctor or practice you’ve seen before, specifically within the past three years. In billing terms, it’s distinguished from a “new patient” visit, which typically costs more and involves more extensive documentation. The distinction matters because it affects how your visit is coded, how long it takes, and what you’re charged.
The Three-Year Rule
The dividing line between a new patient and an established patient is straightforward: if you’ve had a face-to-face encounter with a provider (or another provider of the same specialty in the same practice) within the previous three years, you’re an established patient. If three years pass without any in-person visit, you reset to “new patient” status the next time you’re seen, even if you’ve been going to that office for decades.
The key detail is what counts as a qualifying encounter. It has to be a face-to-face service reported with a specific billing code. If a doctor only interpreted your lab results or read an EKG without actually seeing you in person, that doesn’t count. You could still be classified as a new patient at your next visit because no face-to-face interaction occurred.
How Group Practices Work
The three-year rule gets a little more nuanced when multiple doctors work in the same practice. If you see one physician and then switch to a different physician of the same specialty within that group, you’re still considered an established patient. This is true even if the original doctor has since left the practice. What matters is the specialty match within the group, not the individual provider.
However, if you see a cardiologist in a multispecialty group and then visit a dermatologist in that same group, the dermatologist would treat you as a new patient. Different specialty means a fresh start for billing purposes.
Five Levels of Established Patient Visits
Established patient office visits are billed using five codes (99211 through 99215), each representing a different level of complexity. The level your visit falls under determines how much the appointment costs.
- 99211: The simplest visit. It may not even require a doctor to be in the room. Think of a nurse checking your blood pressure or giving you a quick follow-up for a minor issue. These visits typically last about 5 minutes.
- 99212: A straightforward visit for a focused problem, lasting roughly 10 to 19 minutes.
- 99213: The most commonly billed code. Covers problems of low to moderate severity, like managing a stable chronic condition. Usually about 15 minutes face-to-face.
- 99214: A more detailed visit involving moderate complexity in decision-making. This might apply when a condition isn’t responding to treatment or when multiple health issues need to be addressed together.
- 99215: The most complex established patient visit, reserved for situations requiring highly complex medical decision-making, such as managing several serious conditions at once.
How Your Doctor Picks the Level
Before 2021, the level of your visit was determined by how thoroughly the doctor documented your medical history, physical exam, and decision-making process. That system required meeting specific documentation checkboxes, which often meant doctors spent more time on paperwork than on you.
The rules changed significantly in 2021. Now, doctors choose the billing level based on one of two options: the complexity of the medical decisions they made during your visit, or the total time they spent on your care that day. Physical exam documentation is no longer a primary billing driver. This was a deliberate shift to let physicians focus on thinking through your care rather than filling out forms.
If your doctor uses time to select the level, they document the total minutes spent on the encounter date, including reviewing your chart, talking with you, coordinating care, and writing notes. If they use medical decision-making instead, there’s no requirement to document time at all.
Why It Costs Less Than a New Patient Visit
Established patient visits are generally reimbursed at lower rates than new patient visits. The logic is simple: your doctor already has your history, knows your medications, and has a baseline understanding of your health. A new patient visit requires building all of that from scratch, which takes more time and effort.
For established visits, the billing code only needs to meet two out of three criteria (history, exam, and decision-making complexity) rather than all three. This lower threshold reflects the reduced workload of seeing someone the practice already knows.
If you’re ever unsure why a visit was billed at a particular level, your explanation of benefits (the statement your insurance sends after a claim) will list the specific code used. Comparing that code to the five levels above can help you understand what you were charged for and whether it matches the visit you experienced.