If a doctor told you your liver wasn’t really part of your body and would have to be insured separately, you’d notice. We do exactly that with teeth and eyes, and somehow it has survived a century of medical progress. The carve-out isn’t grounded in biology, evidence, or clinical practice. It’s a historical artifact of how American insurance happened to develop, and it costs people their health and their money every year.
The history is embarrassing
Dental and vision care were excluded from early health insurance plans in the early-to-mid 20th century mostly because dentists and optometrists were organized as separate guilds with their own billing structures, and the new health insurance industry didn’t want to absorb specialties it didn’t understand. Medicare, when it was created in 1965, simply imported that exclusion — eyes and teeth were left out, along with hearing — and decades of subsequent reform have failed to fix it. Other wealthy countries that built their systems later, or rebuilt them after the war, generally folded oral and vision care into their universal frameworks. The American carve-out isn’t a clinical decision. It’s a frozen committee compromise from a time when fluoride was new and contact lenses didn’t exist.
The clinical case is open and shut
Untreated periodontal disease is associated with cardiovascular disease, diabetes complications, adverse pregnancy outcomes, and elevated systemic inflammation. Vision loss is a leading risk factor for falls in older adults, which are a leading cause of disability and death. Diabetic retinopathy, glaucoma, and oral cancers are all detected during routine dental and eye exams that uninsured Americans skip in droves. The body does not care which insurance silo a clinician’s bill goes through. Treating mouths and eyes as cosmetic accessories instead of medical organs produces predictable downstream costs that the rest of the health system pays anyway, just later and more expensively.
The economics are upside down
Standalone dental and vision plans are typically capped at $1,000 to $2,000 in annual benefits, a number that hasn’t kept pace with inflation in any meaningful way since the 1970s. A single crown can blow through the cap. Vision plans usually cover one exam and a limited frame allowance. Premiums plus copays often exceed what enrollees recover in benefits, which is why a large share of Americans simply pay cash. Meanwhile, employers offer the plans because workers ask for them, not because they’re efficient. The insurance is structurally bad, and the alternative — bundling oral and vision care into comprehensive coverage with real catastrophic protection — is what most peer countries already do.
Bottom line
There is no medical reason teeth and eyes are insured separately, no economic reason it’s working well, and no political reason except inertia and the carve-out’s profitable defenders. Any serious health reform conversation that doesn’t include dental and vision is treating symptoms while ignoring an obvious structural defect. The body doesn’t have boundaries at the lips and eyebrows. Our insurance shouldn’t either.
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