14.2 Dental, Vision, and Limited Benefit Plans

Dental Insurance

Dental plans carry lower premiums and lower annual maximums than major medical and emphasize prevention. Plan designs:

• Dental PPO — most common; in-network discounts, partial out-of-network coverage, no referrals.
• DHMO / prepaid — must use an assigned primary dentist; specialists require referral; no out-of-network coverage except emergencies; lowest premium, copays instead of coinsurance.
• Indemnity (traditional) — any licensed dentist; reimburses on a UCR (usual, customary, reasonable) fee schedule; highest premium.
• Discount dental plans — NOT insurance; members pay discounted cash rates directly.

Service Categories and Cost-Sharing

Key terms: the annual maximum ($1,000-$2,500) is the most the plan pays per year and does not roll over; deductibles ($25-$100) are usually waived for preventive care; waiting periods (longer for major work) curb adverse selection.

Coordination of Benefits (COB) — Worked Example

When a person has two plans, COB prevents the insured from collecting more than 100% of allowed charges. The primary plan pays first; the secondary plan pays remaining eligible expenses up to the combined 100% ceiling.

Example: A $1,000 crown. Plan A (primary, major at 50%) pays $500. The allowed charge is $1,000, so the secondary plan may pay the remaining $500 — but no more, because total payment cannot exceed the $1,000 allowed amount. If the secondary plan's own schedule would have paid only $400 standalone, it pays the lesser figure under its non-duplication rule.

Birthday rule for children: the plan of the parent whose birthday (month and day, not year) falls earlier in the calendar year is primary. A trap is to pick the older parent — age is irrelevant; only the calendar date matters.

Vision Insurance

Vision plans cover routine eye care and corrective eyewear, again with low premiums and a preventive focus. Designs mirror dental: vision PPO (in/out-of-network), vision HMO (in-network only), and non-insurance discount plans.

Frequency Limits and Allowances

A frame allowance is a dollar cap toward frames; amounts over the allowance are the member's responsibility (sometimes with a discount). The most-tested distinction: medical conditions of the eye (cataracts, glaucoma, eye injury, diabetic eye disease, macular degeneration) are paid by medical insurance, not the vision plan. Vision plans handle routine exams and eyewear only.

Limited Benefit Plans (Overview)

Limited benefit (supplemental/specified) plans pay fixed cash benefits for narrow events rather than reimbursing comprehensive medical costs. They pay regardless of other coverage, the insured keeps the cash for any use, and underwriting is often simplified or guaranteed-issue. Critically, regulators require clear disclosure that these are not comprehensive coverage and may not satisfy ACA essential health benefits — they cannot be sold as a replacement for major medical.

Exam-Ready Distinctions

The recurring dental question asks you to slot a procedure into the right class and apply the matching coinsurance. Anchor on the pattern: preventive care is paid generously to keep small problems from becoming expensive ones, basic restorative work sits in the middle, and major prosthetic work pays only about half because it is costly and somewhat elective in timing. Orthodontia is usually carved out with its own lifetime maximum and is frequently limited to dependent children.

Because dental plans are inexpensive and predictable, insurers guard against people enrolling only when they already need a crown, which is why waiting periods are longest for major services and why the annual maximum does not roll forward.

A second high-yield idea is the difference between a scheduled (indemnity) approach and a UCR approach. A scheduled plan lists a fixed dollar amount per procedure, so the member knows the payment in advance but bears any excess. A UCR plan pays a percentage of the usual, customary, and reasonable charge for the geographic area; a dentist who bills above the UCR level leaves the patient responsible for the balance. DHMO designs avoid this by using a fixed copay schedule and a closed network, trading flexibility for the lowest premium.

On vision, the most testable point is the boundary line: routine refractive care and eyewear belong to the vision plan, but disease or injury of the eye belongs to medical insurance. A diabetic retinopathy exam, a glaucoma work-up, cataract surgery, and treatment after an eye injury are all medical claims even though they involve the eye. The vision plan's frequency limits (one exam and lens set per year, frames every other year) and frame allowance are simple recall items.

Exam Trap: Discount dental and discount vision "plans" are not insurance at all. They give members access to negotiated cash prices and pay no benefit, so they are not subject to insurance reserve or guaranteed-renewability rules and cannot satisfy any coverage mandate. Selling one as though it were insurance is a misrepresentation.