Updated August 3, 2026. Quick answer: high-deductible Plan G is Plan G. Same standardised benefits, same rules — you simply pay the first $2,950 in 2026 yourself before it starts paying. In exchange the premium is far lower. It is the right shape for someone who wants protection against a catastrophe rather than help with routine costs.
The one number that decides it
Work out the annual premium difference between standard Plan G and high-deductible Plan G in your area. Call it D. If D is close to $2,950, the high-deductible version can only lose. If D is much smaller than the deductible, it wins in every year you stay healthy and costs you a bounded amount in the years you do not.
That is the entire analysis. It is a bet you can size exactly, which is unusual in insurance and is the main argument for taking it seriously.
What people get wrong about it
- It is not a lesser plan. Coverage above the deductible is identical to Plan G, including Part B excess charges.
- The deductible is annual and resets. $2,950 is a yearly worst case, not a lifetime one — two bad years in a row cost it twice.
- The Part B deductible counts toward it. The $283 you pay in 2026 is not on top of the high deductible; it counts toward it.
- It does not change your ability to switch later. Moving from high-deductible G to standard G is still subject to underwriting outside a guaranteed-issue right, like any other Medigap change.
Who it actually fits
Someone with the cash to absorb a bad year, who wants the ceiling that Original Medicare alone does not provide, and who would rather not pay a large premium in the many years when they use almost nothing. It is the closest thing in this market to buying insurance for the thing insurance is for.
It fits badly if the deductible would be genuinely hard to find in a bad year. A plan you cannot afford to use is not protection.
How standard Plan G and Plan N compare, and the window in which you can buy any of them without underwriting.
General information drawn from Medicare, CMS and state insurance-department publications, not insurance advice. Medicare rules, plan availability and dollar figures change every year, and state rules differ. Every figure here is year-labelled and every source is named so you can check it against your own situation. We do not sell insurance and receive nothing if you buy a plan.