D0120 — Periodic Oral Evaluation (Your Recall Exam)
D0120 is the short check-up exam an established patient gets at a routine recall visit, usually alongside a cleaning.
Almost every dental bill in the country has a D0120 on it somewhere. It is the exam your dentist does at a recall visit — the few minutes of looking, poking and comparing against last time that happen either side of your cleaning. Because the practice already has your chart, your baseline and (usually) recent images, the exam is a comparison rather than a fresh investigation, which is exactly why it costs a fraction of a first-visit exam.
The word that does the work in this code is periodic. It only applies to a patient of record — somebody the office has examined before. A brand-new patient gets D0150 instead, and somebody who turns up between recalls with a specific problem gets D0140. Offices that mix these up are the single most common source of "why was my exam denied?" phone calls.
What the dentist is actually checking
A recall exam is a short list run quickly. The dentist looks for new decay at the gumline and between teeth, checks the margins of existing fillings and crowns for gaps, notes any tooth that has started to wear or crack, reviews the gum readings the hygienist took, feels the neck and jaw for swelling, and looks at the soft tissue of the tongue, palate and cheeks.
None of that is billed separately. The periodontal readings, the oral cancer look-around and the review of your medical history are all inside D0120. What sits outside it are the images (D0274 for a set of four bitewings, D0330 for a panoramic), the cleaning itself (D1110 or D1120) and any fluoride.
Why it appears twice a year
The six-month recall is a scheduling convention, not a clinical law, but dental plans have built their whole preventive design around it. Most policies pay for two evaluations per calendar year or per benefit year. Some count exams and cleanings against a shared allowance, which is why a third visit — even a clinically sensible one — can come back as the patient's responsibility.
Patients with active gum disease, a dry mouth, a history of rapid decay or a complex restorative history are often put on a three- or four-month interval. When that happens the extra exams are frequently out-of-pocket even though the cleanings may be covered under a periodontal maintenance benefit.
Reading D0120 on your statement
On an explanation of benefits you will usually see D0120 listed with a low fee, a plan allowance close to that fee and a patient portion of zero. If your portion is not zero, there are only a handful of likely reasons: you had already used both exams for the year, the office reported it on the same day as another exam code, you were within a waiting period, or the plan runs on a 12-month-from-last-visit rule rather than a calendar year.
It is worth asking which of those applies before paying. Frequency denials are often a date-of-service arithmetic problem, and a corrected claim fixes them.
Questions about D0120
What is dental code D0120?
It is the code for a periodic oral evaluation — the routine recall exam given to a patient the practice has already examined before.
Why was my D0120 exam not covered?
The usual reason is frequency. Most plans allow two evaluations per benefit year, and a third one lands on the patient even if it was clinically appropriate.
Does D0120 include X-rays?
No. Radiographs are always reported separately — D0274 for four bitewings, D0220 for a single periapical, D0330 for a panoramic image.
Can D0120 and D1110 be billed on the same day?
Yes, and they normally are. The exam and the cleaning are distinct services and most plans pay both at the recall visit.
What is the difference between D0120 and D0150?
D0150 is the thorough baseline exam for a new patient or for someone being completely reassessed. D0120 is the shorter comparison exam at a recall visit.
Also known as: recall exam, periodic oral evaluation, check-up, patient of record, six-month visit.