Medicare Supplement: What’s the Difference Between Plan C and F?

Medicare Supplement plans have been around for ages, and the most popular plans by far are Plan C and Plan F.  So, what’s the difference?  Not much. In fact, the only thing Medigap plan Plan C does not cover is Medicare Part B excess charges, which Medigap plan F does.  Is it a big deal?  Not really.

Medicare Part A covers hospital stays and Part B covers outpatient services while Part D covers prescription drugs. As you know by now, Original Medicare still leaves gaps in your healthcare coverage.  Medicare supplemental insurance (Medigap) fills in these gaps.  Some plans fill in most of the gaps, others fill in ALL of the gaps.  Medigap plans F and C fill in all of the gaps, hence their popularity.  Unlike Medicare Advantage plans, you don’t need to worry about an HMO or a PPO network when you buy a Medigap policy.   When you buy a Medigap policy, Original Medicare will pay its Medicare-approved amount first, and the Medigap policy will then pay its part. Depending on the plan, this may leave a balance for you to pay.

Medicare Supplement = Medigap

Medicare Supplement insurance policies are also known as Medigap policies. These Medigap policies are important due to the fact that they may take care of other costs Original Medicare coverage will not cover. These include costs such as: co-payments, coinsurance and deductibles. Some Medigap policies also go the extra mile and pay for care when you travel outside the country. If you travel a lot, you need to check out my post on this subject by clicking here.

There are many different Medigap plans, ranging from plan A to plan N. Two of the most popular plans are Medigap Plan C and Medigap Plan F. Both of these plans cover 100% of what Medicare doesn’t cover.  Out of all the supplement plans available, only Plan F is more comprehensive than Plan C.

You Need a Medigap or Medicare Advantage Plan

As you by now know going “Bare with Medicare” is an OK option, but not advisable under most scenarios, mostly due to the lack of a, “Maximum Out Of Pocket,” or MOOP.  Click here to see my post outlining why a Medicare Supplement needs to be a part of your health insurance coverage if you don’t want to choose a Medicare Advantage plan.

The Takeaway

The only thing that Medigap plan Plan C does not cover is Medicare Part B excess charges.  Plan F DOES cover Part B excess charges. These are the fees that a doctor is legally to charge over and above the amount approved by Medicare as payment for a health service at a physician’s office IF THEY DON’T ACCEPT MEDICARE ASSIGNMENT.  Usually, when these charges occur, it is up to the patient to pay for them out of pocket.  I wrote a blog post about Medicare excess charges and Plan F.  You can read that by clicking here.

Over 99% of doctors and hospitals across the country accept Medicare Assignment. The doctors and hospitals that don’t are usually specialty cancer centers or research institutions.  Medigap Plan F covers these excess charges.  Medigap Plan C does not.   So if Medicare Supplement plan C is substantially less expensive than Medicare Supplement plan F, I’d go ahead and choose C.  If the monthly premiums are within $10, I’d stick with Plan F.

It is also important to note that Plan F offers a high deductible plan. HD-F has a pretty substantial deductible you must pay before it kicks in.  But when it does, the same features of the regular Medigap plan F kicks in, including coverage of the Medicare excess charges.  Check out my comparison of HD-F and Medigap F by clicking here.