Frequency limitation

A frequency limitation is a rule built into a plan's contract capping how often it will pay for a specific procedure within a given time period: two cleanings per benefit year is the most common example, but the same concept applies to bitewing X-rays, fluoride treatments, and periodic exams, each with its own allowed interval. Treatment performed sooner than the limitation allows is simply not covered, regardless of clinical need, unless the patient pays out of pocket.

Frequency limitations are also where a well-intentioned clinical recommendation (a third cleaning in a year for a periodontally compromised patient, say) runs directly into a plan's rules, and the patient needs to understand upfront that this particular visit will not be covered rather than discovering it on an EOB weeks later. Checking a patient's remaining frequency allowance before scheduling additional preventive care avoids both a billing surprise and an awkward conversation at checkout.

Because frequency rules vary by plan and are easy to misremember across a large patient base, verifying them through the practice management system or a real-time eligibility check, rather than from memory, is the more reliable habit.