Medicare Supplement

Standardized Medigap letters explained for Sioux City

SIOUX CITY, Iowa — If you have Original Medicare (Part A and Part B), you've probably noticed it doesn't pay for everything. There are deductibles, coinsurance, and copays that add up. That's where Medicare Supplement insurance — often called Medigap — comes in.

Medigap in Sioux City: filling the gaps in Original Medicare

Medigap is private insurance that works alongside Original Medicare to help cover some of the out-of-pocket costs Medicare leaves behind. It's not the same as Medicare Advantage, and it doesn't replace your Medicare card. Think of it as a second layer that picks up part of the bill after Medicare pays its share.

What Medigap actually pays for

Medigap policies help with costs like the Part A hospital coinsurance, the Part B coinsurance (usually 20%), the first three pints of blood, and hospice coinsurance. Depending on the plan letter you choose, a policy may also help with the Part A deductible, skilled nursing facility coinsurance, or emergency care during foreign travel.

Medigap does not cover:

• Prescription drugs (you'll need a separate Part D plan for that)
• Routine dental, vision, or hearing care
• Long-term care (like a nursing home stay for custodial reasons)
• Private-duty nursing
• Eyeglasses or hearing aids

If you want drug coverage, you'd pair your Medigap plan with a stand-alone Part D plan.

How the standardized letters work

Here's the part that trips people up. Medigap plans are sold by private insurance companies, but the benefits inside each "letter" plan are standardized by the federal government. That means Plan G from one company covers the same core benefits as Plan G from another company — the price and customer service may differ, but the coverage rules don't.

The plans currently available to most new enrollees are labeled with letters: A, B, D, G, K, L, M, and N. (Plans C and F are only available to people who became eligible for Medicare before January 1, 2020, because those plans covered the Part B deductible, which newer enrollees can't buy coverage for anymore.)

Each letter offers a different mix of benefits. Plan G, for example, is one of the more comprehensive options for new enrollees. Plan N has some cost-sharing built in. Plans K and L have out-of-pocket limits but cover a smaller percentage of costs. It's worth comparing letters side-by-side on medicare.gov before deciding.

A local snapshot for Sioux City

Sioux City is in Woodbury County, where residents have access to Medigap policies sold by insurers licensed in Iowa. Because Medigap benefits are standardized at the federal level, a Plan G bought in Sioux City provides the same core coverage as a Plan G bought anywhere else in the country — you can use it with any doctor or hospital in the U.S. that accepts Original Medicare.

What can vary locally is which companies sell which letter plans, and at what price. The Iowa Insurance Division publishes a rate comparison guide, and Iowa's SHIIP (Senior Health Insurance Information Program) counselors can walk you through the options at no cost.

Timing matters more than most people realize

Your best window to buy a Medigap policy is your Medigap Open Enrollment Period — the six months that start the month you're 65 or older and enrolled in Part B. During that window, insurers can't turn you down or charge you more because of health conditions. That's called guaranteed issue.

If you try to buy a Medigap policy later, outside that window and outside a few special circumstances, insurers in most states (including Iowa) can use medical underwriting. That means they can look at your health history and decide whether to offer coverage and at what price.

This is different from the Medicare Advantage and Part D enrollment periods, like the Annual Enrollment Period (Oct. 15 – Dec. 7). Medigap has its own timing rules.

Medigap vs. Medicare Advantage — they're not the same

You can't have both a Medigap policy and a Medicare Advantage plan at the same time. Medicare Advantage bundles your coverage through a private plan (usually with drug coverage included and a network of providers). Medigap works with Original Medicare and generally lets you see any provider that accepts Medicare.

It's a personal decision — cost, provider access, travel patterns, and how you feel about networks all play a role. A SHIIP counselor can help you think it through without trying to sell you anything.