14.2 Dental, Vision, and Limited Benefit Plans

Dental Insurance Structure

Dental insurance covers routine and corrective dental care that major-medical plans generally exclude. Exam questions test how dental plans classify services and apply coinsurance and maximums.

The Three Service Categories

Plans deliberately pay preventive care at the highest rate (often 100% with no deductible) to encourage early treatment that avoids costly major work later. The classification of a single procedure determines both the coinsurance percentage and whether the deductible applies, so candidates must memorize which category a named procedure belongs to. A cleaning is preventive (Type I), a filling is basic (Type II), and a crown is major (Type III); a root canal is usually basic, while the crown placed afterward is major.

Dental coverage also commonly applies a waiting period before major services are payable (often 6-12 months) and a missing tooth provision that excludes replacement of teeth lost before the policy began. These prevent adverse selection by applicants who buy coverage only when they already need expensive work.

Trap: orthodontia is usually a separate benefit with its own lifetime maximum and is frequently limited to dependent children. It is not part of the standard Type I/II/III maximum, and it does not refresh each year the way the annual maximum does.

Comprehensive vs. Scheduled (Limited Benefit) Dental

A scheduled plan pays a set dollar figure per procedure no matter the dentist's charge, so the insured bears any excess. A comprehensive plan pays a percentage of UCR, so the dollar payout floats with actual fees.

Annual Maximums and Deductibles

Most dental plans have a calendar-year maximum (commonly $1,000-$2,500) and a small deductible (e.g., $50) that often does not apply to Type I preventive services. Unlike medical plans, dental annual maximums are low because the covered losses are predictable and capped.

Worked Example: Major Dental Service

An insured needs a $1,200 crown (Type III). The plan has a $50 annual deductible (already met by earlier basic work), 50% coinsurance on major services, and a $1,500 calendar-year maximum of which $400 is already used.

• Plan pays 50% x $1,200 = $600, leaving the insured to pay $600.
• Remaining annual maximum before this claim: $1,500 - $400 = $1,100. The $600 fits, so it is fully paid.
• New used total: $400 + $600 = $1,000; remaining maximum = $500 for the rest of the year.

Vision Plans

Vision insurance covers routine eye care that medical plans exclude. Typical structure:

• Annual or biennial eye exam (refraction).
• Lenses each benefit period and frames usually every 12-24 months, often with a frame allowance.
• Contact lenses offered in lieu of glasses up to an allowance.

Trap: vision insurance covers routine corrective care. Diagnosis and treatment of eye disease or injury (glaucoma, cataracts, retinal injury) is a medical expense paid by the health plan, not the vision plan. Exam questions exploit this split by describing a member who needs cataract surgery and asking which plan pays; the answer is the medical plan.

Limited benefit plans more broadly are any policies that cover a narrow slice of risk rather than comprehensive expenses. Dental, vision, prescription-drug-only, and accident-only plans all fall in this group. Because their scope is narrow and their maximums are low, they are regulated and disclosed as supplemental products, and producers must not present them as substitutes for major-medical coverage. The Affordable Care Act treats stand-alone dental and vision as excepted benefits, meaning they are exempt from many ACA market rules that apply to comprehensive plans.

Coordination of Benefits (COB)

When a person is covered by two group plans (e.g., their own and a spouse's), coordination of benefits prevents collecting more than 100% of the covered loss. One plan is primary (pays first as if no other coverage exists) and the other is secondary (pays the remaining covered amount up to its own limits).

Order-of-benefit rules tested on the exam:

• The plan covering the person as an employee/member is primary over the plan covering them as a dependent.
• For a child covered by both parents, the birthday rule applies: the plan of the parent whose birthday (month/day, not year) falls earlier in the calendar year is primary.

Worked Example: COB on a $300 Dental Claim

Primary plan pays 80% = $240. The secondary plan would have paid 80% as primary but, under COB, pays only the unpaid balance up to its limit: $300 - $240 = $60. Total paid = $300 (100%), never more.

Trap: COB never lets the insured profit. The secondary plan reduces its payment so combined benefits equal, but do not exceed, the actual covered loss.