• Medicare would cover dental, vision and hearing under the spending plan.
• The eligibility age — currently 65 — would also be lowered.
• There's no guarantee that these proposals will make it through the full legislative process.

Health insurance for America's older population would be expanded under a $3.5 trillion budget plan released Monday by Senate Democrats.

As part of the budget blueprint, Medicare — relied on by most Americans once they reach the eligibility age of 65 — would cover dental, vision and hearing. Additionally, the age when people can sign up for the insurance would also be lowered, although it's uncertain whether it would be age 60 as President Joe Biden has said he supports.

The proposals are part of Biden's economic agenda to spend on climate change, health-care and family-service programs. Although there's no certainty that everything in the budget resolution will make it through the full congressional process, Medicare advocates are hopeful that coverage of the extra benefits will come to fruition.

"This would be a very big deal for the Medicare program and Medicare beneficiaries," said David Lipschutz, associate director and senior policy attorney for the Center for Medicare Advocacy.

"If Congress adds [those] benefits, it would fill some major gaps in coverage that the program has had since its inception," Lipschutz said.

About 62.8 million individuals are enrolled in Medicare, the majority of whom are age 65 and older and rely on it as their primary health insurance. The program was created through congressional legislation in 1965 under President Lyndon Johnson and largely reflected health-coverage standards at the time, which didn't involve widespread coverage for dental, vision and hearing, Lipschutz said.

"But as the health-care system has evolved, Medicare has often been slow to catch up," he said.

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Original Medicare consists of Part A (hospital coverage) and Part B (outpatient care coverage). Excluding limited exceptions, there is no coverage related to dental, vision or hearing, which can lead to beneficiaries forgoing care.

"It would be a significant improvement [to provide coverage] for people who often go without needed care because they can't afford it and for people who pay a lot for the care they need," said Tricia Neuman, executive director for the Kaiser Family Foundation's program on Medicare policy.

Some beneficiaries get limited coverage for dental, vision and hearing if they choose to get their Parts A and B benefits delivered through an Advantage Plan (Part C), which often include those extras. About 40% of beneficiaries are enrolled in Advantage Plans.

However, Lipschutz said, the extra coverage generally is not comprehensive. On the other hand, if expanded benefits — no matter how generous — were required under original Medicare, they'd become standard in an Advantage Plan.

"We'd hope this would enrich benefits for all beneficiaries," Lipschutz said.

Democrats said their budget plan is paid for through higher tax revenue, health-care savings and long-term economic growth. Biden has proposed imposing higher taxes on the rich and corporations, as well as providing more money to the IRS to bulk up its enforcement efforts.

While the plan includes scant details about the proposed Medicare changes, other efforts to expand the program coverage could offer some clues.

A House bill introduced in July by Rep. Lloyd Doggett, D-Texas, would include things such as dentures, preventive and emergency dental care, refractive eye exams and eyeglasses, and hearing aids and exams. 

The expanded coverage also was included in a broader health-care-related bill that cleared the House in 2019 but was not taken up by the Senate. Under that proposal, beneficiaries would have chipped in the standard 20% for some dental coverage.

Major treatments — i.e., bridges, crowns, root canals — would have cost more. Dentures also would have been covered, within limits. And routine eye and hearing exams, as well as hearing aids, contact lenses and eyeglasses, also would have been included.