14.2 Dental, Vision, and Limited Benefit Plans

Key Takeaways

  • Dental plans typically pay 100% preventive, 80% basic, and 50% major, with a low annual maximum and waiting periods to control adverse selection.
  • Vision plans cover routine exams and an eyewear allowance; disease and injury (cataracts, glaucoma) are paid by medical insurance instead.
  • Limited benefit plans pay fixed amounts for a narrow scope and must disclose they are not comprehensive major medical coverage.
  • Coordination of benefits caps reimbursement-type plans at 100% of the loss; the employee/primary plan pays first, the dependent/secondary plan pays the remainder.
  • The birthday rule decides primary coverage for a dependent child by the parent's earliest calendar-year birthday, and fixed-indemnity plans are exempt from COB.
Last updated: June 2026

Dental, Vision, and Limited Benefit Plans

Dental, vision, and limited benefit plans are supplemental health products. They are sold separately from major medical coverage and are designed to fill predictable, high-frequency expenses rather than catastrophic ones. On the licensing exam these products are tested for their distinctive structures, annual maximums, and the way they coordinate (or fail to coordinate) with medical insurance.

Dental Insurance Structure

Dental plans group covered services into three tiers, and the typical reimbursement schedule is easy to remember as 100/80/50:

CategoryExamplesTypical coverage
Preventive / diagnosticCleanings, exams, x-rays100%, no deductible
Basic / restorativeFillings, extractions, root canals80% after deductible
MajorCrowns, bridges, dentures50% after deductible
OrthodontiaBraces (often a rider)50% to a lifetime cap

Dental plans carry a low annual maximum (often $1,000-$2,000) rather than the high or unlimited maximum found in medical coverage, because dental costs are frequent but small. Preventive care is covered at 100% with no deductible precisely to encourage early treatment that avoids costly major work later. Waiting periods (for example, 6 or 12 months before major services) discourage adverse selection, in which a person buys a plan only when expensive work is already needed.

Dental plans also come in several network designs. A dental PPO lets the member use any dentist but pays more in-network; a DHMO assigns a primary dentist and requires a referral to see a specialist, paying little or nothing out of network. Scheduled (indemnity) plans pay a fixed dollar amount per procedure regardless of the dentist's actual charge. Each design trades freedom of choice against cost, and exam questions often hinge on the DHMO's referral requirement and its lack of out-of-network benefits.

Vision Insurance

Vision plans cover routine eye care: an annual eye exam, an allowance toward frames or contact lenses, and lens benefits. Coverage is typically delivered on a scheduled-allowance basis, such as a new exam every 12 months, new lenses every 12 months, and new frames every 24 months. A frame allowance is a flat dollar amount (for example, $150) the plan applies toward frames; the member pays any excess.

The key exam distinction is between routine and medical eye care:

  • Vision plan pays for routine refraction exams, eyeglasses, and contact lenses.
  • Medical insurance pays for diagnosis and treatment of eye disease or injury, such as glaucoma, cataract surgery, or a foreign body in the eye.

A member who develops cataracts has surgery covered by medical insurance, not the vision plan. Vision and dental are often bundled into group benefit packages because their predictable costs make them affordable group add-ons.

Like dental, vision plans frequently use network arrangements. An in-network provider accepts negotiated fees and the member pays a small copay, while an out-of-network claim is reimbursed only up to a fixed schedule, leaving the member responsible for the balance. Contact lenses are usually an either/or benefit with glasses in a given period - the member chooses one or the other within the allowance, not both. Because the benefits are small and frequent, vision plans seldom carry deductibles; instead they rely on copays and capped allowances to control cost while keeping routine eye care affordable and predictable for the insured.

Limited Benefit Plans and Coordination

Limited benefit plans (also called supplemental or indemnity plans) pay fixed, predetermined amounts rather than reimbursing actual charges, and they cover a narrow scope such as a single disease, hospital confinement, or accident. Because they are limited by design, federal rules require a clear disclosure that the plan is not comprehensive major medical coverage, so consumers do not mistake them for full health insurance.

When a person carries more than one plan, coordination of benefits (COB) prevents the insured from collecting more than 100% of the loss on reimbursement-type coverage. The plan covering the person as an employee (or named insured) is primary; the plan covering them as a dependent is secondary. For children of two working parents, the birthday rule makes primary the plan of the parent whose birthday (month and day, not year) falls earliest in the calendar year.

Worked COB example: A $1,000 dental bill is presented to a primary plan that pays 80% ($800). The secondary plan, which alone would have paid 50% ($500), pays only the unmet portion up to its own allowable, so the patient's $200 balance is covered, bringing total reimbursement to $1,000 - not $1,300. Trap: Fixed-indemnity supplemental plans pay their stated benefit regardless of other coverage; only reimbursement coverage is subject to COB.

One more COB nuance is the order of payment when one parent has custody after a divorce. Absent a court order assigning responsibility, the plan of the custodial parent is generally primary, followed by the custodial parent's spouse, then the non-custodial parent. A court decree assigning health-coverage responsibility overrides the default order entirely. Understanding this hierarchy matters because paying claims in the wrong order causes overpayments that the insurer must later recover, and exam questions frequently test whether the student can identify which plan stands first when several apply to the same loss.

Test Your Knowledge

Under a typical dental plan's 100/80/50 schedule, which category is usually covered at 100% with no deductible?

A
B
C
D
Test Your Knowledge

A child is covered as a dependent under both parents' group plans. Under the birthday rule, which plan is primary?

A
B
C
D